diff options
| -rw-r--r-- | linux-core/drm_crtc.c | 343 | ||||
| -rw-r--r-- | linux-core/drm_crtc.h | 1 | ||||
| -rw-r--r-- | linux-core/drm_fb.c | 9 | ||||
| -rw-r--r-- | linux-core/drm_modes.c | 2 | ||||
| -rw-r--r-- | linux-core/intel_fb.c | 1 |
5 files changed, 205 insertions, 151 deletions
diff --git a/linux-core/drm_crtc.c b/linux-core/drm_crtc.c index ab8b4688..e5a4b32b 100644 --- a/linux-core/drm_crtc.c +++ b/linux-core/drm_crtc.c @@ -39,8 +39,7 @@ * @ptr: object pointer, used to generate unique ID * * LOCKING: - * Process context (either init or calling process). Must take DRM mode_config - * lock around IDR allocation. + * Caller must hold DRM mode_config lock. * * Create a unique identifier based on @ptr in @dev's identifier space. Used * for tracking modes, CRTCs and outputs. @@ -59,15 +58,12 @@ again: return 0; } - spin_lock(&dev->mode_config.config_lock); - ret = idr_get_new_above(&dev->mode_config.crtc_idr, ptr, 1, &new_id); if (ret == -EAGAIN) { spin_unlock(&dev->mode_config.config_lock); goto again; } - spin_unlock(&dev->mode_config.config_lock); return new_id; } @@ -116,8 +112,7 @@ struct drm_crtc *drm_crtc_from_fb(struct drm_device *dev, * @dev: DRM device * * LOCKING: - * Process context (either init or calling process). Must take DRM mode_config - * lock around mode_config manipulation. + * Caller must hold mode config lock. * * Creates a new framebuffer objects and adds it to @dev's DRM mode_config. * @@ -128,27 +123,21 @@ struct drm_framebuffer *drm_framebuffer_create(drm_device_t *dev) { struct drm_framebuffer *fb; - spin_lock(&dev->mode_config.config_lock); /* Limit to single framebuffer for now */ if (dev->mode_config.num_fb > 1) { spin_unlock(&dev->mode_config.config_lock); DRM_ERROR("Attempt to add multiple framebuffers failed\n"); return NULL; } - spin_unlock(&dev->mode_config.config_lock); fb = kzalloc(sizeof(struct drm_framebuffer), GFP_KERNEL); - if (!fb) { - + if (!fb) return NULL; - } fb->id = drm_idr_get(dev, fb); fb->dev = dev; - spin_lock(&dev->mode_config.config_lock); dev->mode_config.num_fb++; list_add(&fb->head, &dev->mode_config.fb_list); - spin_unlock(&dev->mode_config.config_lock); return fb; } @@ -159,8 +148,7 @@ EXPORT_SYMBOL(drm_framebuffer_create); * @fb: framebuffer to remove * * LOCKING: - * Process context (either init or calling process). Must take DRM mode_config - * lock around mode_config manipulation. + * Caller must hold mode config lock. * * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes * it, setting it to NULL. @@ -171,7 +159,6 @@ void drm_framebuffer_destroy(struct drm_framebuffer *fb) struct drm_crtc *crtc; /* remove from any CRTC */ - spin_lock(&dev->mode_config.config_lock); list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { if (crtc->fb == fb) crtc->fb = NULL; @@ -180,7 +167,6 @@ void drm_framebuffer_destroy(struct drm_framebuffer *fb) drm_idr_put(dev, fb->id); list_del(&fb->head); dev->mode_config.num_fb--; - spin_unlock(&dev->mode_config.config_lock); kfree(fb); } @@ -191,8 +177,7 @@ void drm_framebuffer_destroy(struct drm_framebuffer *fb) * @funcs: callbacks for the new CRTC * * LOCKING: - * Process context (either init or calling process). Must take DRM mode_config - * lock around mode_config manipulation. + * Caller must hold mode config lock. * * Creates a new CRTC object and adds it to @dev's mode_config structure. * @@ -213,10 +198,8 @@ struct drm_crtc *drm_crtc_create(drm_device_t *dev, crtc->id = drm_idr_get(dev, crtc); - spin_lock(&dev->mode_config.config_lock); list_add_tail(&crtc->head, &dev->mode_config.crtc_list); dev->mode_config.num_crtc++; - spin_unlock(&dev->mode_config.config_lock); return crtc; } @@ -227,8 +210,7 @@ EXPORT_SYMBOL(drm_crtc_create); * @crtc: CRTC to remove * * LOCKING: - * Process context (either init or calling process). Must take DRM mode_config - * lock around mode_config traversal. + * Caller must hold mode config lock. * * Cleanup @crtc. Calls @crtc's cleanup function, then removes @crtc from * its associated DRM device's mode_config. Frees it afterwards. @@ -240,11 +222,9 @@ void drm_crtc_destroy(struct drm_crtc *crtc) if (crtc->funcs->cleanup) (*crtc->funcs->cleanup)(crtc); - spin_lock(&dev->mode_config.config_lock); drm_idr_put(dev, crtc->id); list_del(&crtc->head); dev->mode_config.num_crtc--; - spin_unlock(&dev->mode_config.config_lock); kfree(crtc); } EXPORT_SYMBOL(drm_crtc_destroy); @@ -254,7 +234,7 @@ EXPORT_SYMBOL(drm_crtc_destroy); * @crtc: CRTC to check * * LOCKING: - * Caller? (FIXME) + * Caller must hold mode config lock. * * Walk @crtc's DRM device's mode_config and see if it's in use. * @@ -289,7 +269,7 @@ static struct drm_display_mode std_mode[] = { * @maxY: max height for modes * * LOCKING: - * Caller? (FIXME) + * Caller must hold mode config lock. * * Based on @dev's mode_config layout, scan all the outputs and try to detect * modes on them. Modes will first be added to the output's probed_modes @@ -379,7 +359,7 @@ void drm_crtc_probe_output_modes(struct drm_device *dev, int maxX, int maxY) * @y: height of mode * * LOCKING: - * Caller? (FIXME) + * Caller must hold mode config lock. * * Try to set @mode on @crtc. Give @crtc and its associated outputs a chance * to fixup or reject the mode prior to trying to set it. @@ -497,7 +477,7 @@ EXPORT_SYMBOL(drm_crtc_set_mode); * @dev: DRM device * * LOCKING: - * Caller? (FIXME) + * Caller must hold mode config lock. * * If an output or CRTC isn't part of @dev's mode_config, it can be disabled * by calling its dpms function, which should power it off. @@ -524,17 +504,14 @@ void drm_disable_unused_functions(struct drm_device *dev) * @mode: mode data * * LOCKING: - * Process context (either init or calling process). Must take @output's - * mode_lock around mode list manipulation. + * Caller must hold mode config lock. * * Add @mode to @output's mode list for later use. */ void drm_mode_probed_add(struct drm_output *output, struct drm_display_mode *mode) { - spin_lock(&output->modes_lock); list_add(&mode->head, &output->probed_modes); - spin_unlock(&output->modes_lock); } EXPORT_SYMBOL(drm_mode_probed_add); @@ -544,16 +521,13 @@ EXPORT_SYMBOL(drm_mode_probed_add); * @mode: mode to remove * * LOCKING: - * Process context (either init or calling process). Must take @output's - * mode_lock around mode list manipulation. + * Caller must hold mode config lock. * * Remove @mode from @output's mode list, then free it. */ void drm_mode_remove(struct drm_output *output, struct drm_display_mode *mode) { - spin_lock(&output->modes_lock); list_del(&mode->head); - spin_unlock(&output->modes_lock); kfree(mode); } EXPORT_SYMBOL(drm_mode_remove); @@ -565,8 +539,7 @@ EXPORT_SYMBOL(drm_mode_remove); * @name: user visible name of the output * * LOCKING: - * Process context (either init or calling process). Must take @dev's - * mode_config lock around mode list manipulation. + * Caller must hold @dev's mode_config lock. * * Creates a new drm_output structure and adds it to @dev's mode_config * structure. @@ -593,7 +566,6 @@ struct drm_output *drm_output_create(drm_device_t *dev, output->subpixel_order = SubPixelUnknown; INIT_LIST_HEAD(&output->probed_modes); INIT_LIST_HEAD(&output->modes); - spin_lock_init(&output->modes_lock); /* randr_output? */ /* output_set_monitor(output)? */ /* check for output_ignored(output)? */ @@ -614,9 +586,7 @@ EXPORT_SYMBOL(drm_output_create); * @output: output to remove * * LOCKING: - * Process context (either init or calling process). Must take @dev's - * mode_config lock around mode list manipulation. Caller must hold - * modes lock? (FIXME) + * Caller must hold @dev's mode_config lock. * * Call @output's cleanup function, then remove the output from the DRM * mode_config after freeing @output's modes. @@ -704,7 +674,7 @@ EXPORT_SYMBOL(drm_mode_create); * @mode: mode to remove * * LOCKING: - * None. + * Caller must hold mode config lock. * * Free @mode's unique identifier, then free it. */ @@ -786,7 +756,7 @@ out_err: * @dev: DRM device * * LOCKING: - * None. + * Caller must hold mode config lock. */ static void drm_pick_crtcs (drm_device_t *dev) { @@ -876,7 +846,7 @@ clone: * @can_grow: this configuration is growable * * LOCKING: - * Must take various locks. (FIXME) + * Called at init time, must take mode config lock. * * Scan the CRTCs and outputs and try to put together an initial setup. * At the moment, this is a cloned configuration across all heads with @@ -893,7 +863,9 @@ bool drm_initial_config(drm_device_t *dev, bool can_grow) struct drm_framebuffer *fb; drm_buffer_object_t *fbo; unsigned long size, bytes_per_pixel; - int ret; + int ret = false; + + spin_lock(&dev->mode_config.config_lock); drm_crtc_probe_output_modes(dev, 2048, 2048); @@ -908,7 +880,8 @@ bool drm_initial_config(drm_device_t *dev, bool can_grow) fb = drm_framebuffer_create(dev); if (!fb) { DRM_ERROR("failed to allocate fb.\n"); - return true; + ret = true; + goto out; } output->crtc->fb = fb; des_mode = output->crtc->desired_mode; @@ -945,7 +918,9 @@ bool drm_initial_config(drm_device_t *dev, bool can_grow) } drm_disable_unused_functions(dev); - return false; +out: + spin_unlock(&dev->mode_config.config_lock); + return ret; } EXPORT_SYMBOL(drm_initial_config); @@ -954,7 +929,7 @@ EXPORT_SYMBOL(drm_initial_config); * @dev: DRM device * * LOCKING: - * Caller? (FIXME) + * Caller must hold mode config lock. * * Free up all the outputs and CRTCs associated with this DRM device, then * free up the framebuffers and associated buffer objects. @@ -1001,7 +976,7 @@ EXPORT_SYMBOL(drm_mode_config_cleanup); * @fb: new framebuffer * * LOCKING: - * Caller? (FIXME) + * Caller must hold mode config lock. * * Setup a new configuration, provided by the user in @crtc_info, and enable * it. @@ -1144,7 +1119,7 @@ void drm_crtc_convert_umode(struct drm_display_mode *out, struct drm_mode_modein * @arg: arg from ioctl * * LOCKING: - * Caller? (FIXME) + * Takes mode config lock. * * Construct a set of configuration description structures and return * them to the user, including CRTC, output and framebuffer configuration. @@ -1167,7 +1142,7 @@ int drm_mode_getresources(struct inode *inode, struct file *filp, struct drm_crtc *crtc; struct drm_mode_modeinfo u_mode; struct drm_display_mode *mode; - int retcode = 0; + int ret = 0; int mode_count= 0; int output_count = 0; int crtc_count = 0; @@ -1176,6 +1151,8 @@ int drm_mode_getresources(struct inode *inode, struct file *filp, memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); + spin_lock(&dev->mode_config.config_lock); + list_for_each(lh, &dev->mode_config.fb_list) fb_count++; @@ -1191,8 +1168,10 @@ int drm_mode_getresources(struct inode *inode, struct file *filp, list_for_each(lh, &dev->mode_config.usermode_list) mode_count++; - if (copy_from_user(&card_res, argp, sizeof(card_res))) - return -EFAULT; + if (copy_from_user(&card_res, argp, sizeof(card_res))) { + ret = -EFAULT; + goto out_unlock; + } if (card_res.count_modes == 0) { DRM_DEBUG("probing modes %dx%d\n", dev->mode_config.max_width, dev->mode_config.max_height); @@ -1212,7 +1191,7 @@ int drm_mode_getresources(struct inode *inode, struct file *filp, copied = 0; list_for_each_entry(fb, &dev->mode_config.fb_list, head) { if (put_user(fb->id, &card_res.fb_id[copied++])) { - retcode = -EFAULT; + ret = -EFAULT; goto done; } } @@ -1225,7 +1204,7 @@ int drm_mode_getresources(struct inode *inode, struct file *filp, list_for_each_entry(crtc, &dev->mode_config.crtc_list, head){ DRM_DEBUG("CRTC ID is %d\n", crtc->id); if (put_user(crtc->id, &card_res.crtc_id[copied++])) { - retcode = -EFAULT; + ret = -EFAULT; goto done; } } @@ -1240,7 +1219,7 @@ int drm_mode_getresources(struct inode *inode, struct file *filp, head) { DRM_DEBUG("OUTPUT ID is %d\n", output->id); if (put_user(output->id, &card_res.output_id[copied++])) { - retcode = -EFAULT; + ret = -EFAULT; goto done; } } @@ -1255,7 +1234,7 @@ int drm_mode_getresources(struct inode *inode, struct file *filp, list_for_each_entry(mode, &output->modes, head) { drm_crtc_convert_to_umode(&u_mode, mode); if (copy_to_user(&card_res.modes[copied++], &u_mode, sizeof(struct drm_mode_modeinfo))) { - retcode = -EFAULT; + ret = -EFAULT; goto done; } } @@ -1264,7 +1243,7 @@ int drm_mode_getresources(struct inode *inode, struct file *filp, list_for_each_entry(mode, &dev->mode_config.usermode_list, head) { drm_crtc_convert_to_umode(&u_mode, mode); if (copy_to_user(&card_res.modes[copied++], &u_mode, sizeof(struct drm_mode_modeinfo))) { - retcode = -EFAULT; + ret = -EFAULT; goto done; } } @@ -1277,9 +1256,11 @@ done: card_res.count_modes); if (copy_to_user(argp, &card_res, sizeof(card_res))) - return -EFAULT; + ret = -EFAULT; - return retcode; +out_unlock: + spin_unlock(&dev->mode_config.config_lock); + return ret; } /** @@ -1309,14 +1290,18 @@ int drm_mode_getcrtc(struct inode *inode, struct file *filp, struct drm_crtc *crtc; struct drm_output *output; int ocount; - int retcode = 0; + int ret = 0; if (copy_from_user(&crtc_resp, argp, sizeof(crtc_resp))) return -EFAULT; + spin_lock(&dev->mode_config.config_lock); crtc = idr_find(&dev->mode_config.crtc_idr, crtc_resp.crtc_id); - if (!crtc || (crtc->id != crtc_resp.crtc_id)) - return -EINVAL; + if (!crtc || (crtc->id != crtc_resp.crtc_id)) { + ret = -EINVAL; + goto out; + } + crtc_resp.x = crtc->x; crtc_resp.y = crtc->y; crtc_resp.fb_id = 1; @@ -1335,9 +1320,11 @@ int drm_mode_getcrtc(struct inode *inode, struct file *filp, } if (copy_to_user(argp, &crtc_resp, sizeof(crtc_resp))) - return -EFAULT; + ret = -EFAULT; - return retcode; +out: + spin_unlock(&dev->mode_config.config_lock); + return ret; } /** @@ -1367,7 +1354,7 @@ int drm_mode_getoutput(struct inode *inode, struct file *filp, struct drm_output *output; struct drm_display_mode *mode; int mode_count = 0; - int retcode = 0; + int ret = 0; int copied = 0; int i; @@ -1375,9 +1362,13 @@ int drm_mode_getoutput(struct inode *inode, struct file *filp, return -EFAULT; DRM_DEBUG("output id %d:\n", out_resp.output); + + spin_lock(&dev->mode_config.config_lock); output= idr_find(&dev->mode_config.crtc_idr, out_resp.output); - if (!output || (output->id != out_resp.output)) - return -EINVAL; + if (!output || (output->id != out_resp.output)) { + ret = -EINVAL; + goto out_unlock; + } list_for_each_entry(mode, &output->modes, head) mode_count++; @@ -1402,14 +1393,14 @@ int drm_mode_getoutput(struct inode *inode, struct file *filp, copied = 0; list_for_each_entry(mode, &output->modes, head) { if (put_user(mode->mode_id, &out_resp.modes[copied++])) { - retcode = -EFAULT; + ret = -EFAULT; goto done; } } for (i = 0; i < DRM_OUTPUT_MAX_UMODES; i++) { if (output->user_mode_ids[i] != 0) if (put_user(output->user_mode_ids[i], &out_resp.modes[copied++])) { - retcode = -EFAULT; + ret = -EFAULT; goto done; } } @@ -1419,9 +1410,11 @@ int drm_mode_getoutput(struct inode *inode, struct file *filp, done: if (copy_to_user(argp, &out_resp, sizeof(out_resp))) - return -EFAULT; + ret = -EFAULT; - return retcode; +out_unlock: + spin_unlock(&dev->mode_config.config_lock); + return ret; } /** @@ -1452,26 +1445,28 @@ int drm_mode_setcrtc(struct inode *inode, struct file *filp, struct drm_output **output_set = NULL, *output; struct drm_display_mode *mode; struct drm_framebuffer *fb = NULL; - int retcode = 0; + int ret = 0; int i; if (copy_from_user(&crtc_req, argp, sizeof(crtc_req))) return -EFAULT; + spin_lock(&dev->mode_config.config_lock); crtc = idr_find(&dev->mode_config.crtc_idr, crtc_req.crtc_id); if (!crtc || (crtc->id != crtc_req.crtc_id)) { DRM_DEBUG("Unknown CRTC ID %d\n", crtc_req.crtc_id); - return -EINVAL; + ret = -EINVAL; + goto out; } if (crtc_req.mode) { - /* if we have a mode we need a framebuffer */ if (crtc_req.fb_id) { fb = idr_find(&dev->mode_config.crtc_idr, crtc_req.fb_id); if (!fb || (fb->id != crtc_req.fb_id)) { DRM_DEBUG("Unknown FB ID%d\n", crtc_req.fb_id); - return -EINVAL; + ret = -EINVAL; + goto out; } } mode = idr_find(&dev->mode_config.crtc_idr, crtc_req.mode); @@ -1489,43 +1484,55 @@ int drm_mode_setcrtc(struct inode *inode, struct file *filp, } DRM_DEBUG("Unknown mode id %d, %p\n", crtc_req.mode, mode); - return -EINVAL; + ret = -EINVAL; + goto out; } } else mode = NULL; if (crtc_req.count_outputs == 0 && mode) { DRM_DEBUG("Count outputs is 0 but mode set\n"); - return -EINVAL; + ret = -EINVAL; + goto out; } if (crtc_req.count_outputs > 0 && !mode && !fb) { DRM_DEBUG("Count outputs is %d but no mode or fb set\n", crtc_req.count_outputs); - return -EINVAL; + ret = -EINVAL; + goto out; } if (crtc_req.count_outputs > 0) { u32 out_id; - output_set = kmalloc(crtc_req.count_outputs * sizeof(struct drm_output *), GFP_KERNEL); - if (!output_set) - return -ENOMEM; + output_set = kmalloc(crtc_req.count_outputs * + sizeof(struct drm_output *), GFP_KERNEL); + if (!output_set) { + ret = -ENOMEM; + goto out; + } for (i = 0; i < crtc_req.count_outputs; i++) { - if (get_user(out_id, &crtc_req.set_outputs[i])) - return -EFAULT; + if (get_user(out_id, &crtc_req.set_outputs[i])) { + ret = -EFAULT; + goto out; + } output = idr_find(&dev->mode_config.crtc_idr, out_id); if (!output || (out_id != output->id)) { DRM_DEBUG("Output id %d unknown\n", out_id); - return -EINVAL; + ret = -EINVAL; + goto out; } output_set[i] = output; } } - retcode = drm_crtc_set_config(crtc, &crtc_req, mode, output_set, fb); - return retcode; + ret = drm_crtc_set_config(crtc, &crtc_req, mode, output_set, fb); + +out: + spin_unlock(&dev->mode_config.config_lock); + return ret; } /** @@ -1536,7 +1543,7 @@ int drm_mode_setcrtc(struct inode *inode, struct file *filp, * @arg: arg from ioctl * * LOCKING: - * Caller? (FIXME) + * Takes mode config lock. * * Add a new FB to the specified CRTC, given a user request. * @@ -1555,7 +1562,8 @@ int drm_mode_addfb(struct inode *inode, struct file *filp, struct drm_mode_config *config = &dev->mode_config; struct drm_framebuffer *fb; struct drm_buffer_object *bo; - int ret; + struct drm_crtc *crtc; + int ret = 0; if (copy_from_user(&r, argp, sizeof(r))) return -EFAULT; @@ -1569,17 +1577,22 @@ int drm_mode_addfb(struct inode *inode, struct file *filp, return -EINVAL; } + spin_lock(&dev->mode_config.config_lock); /* TODO check limits are okay */ ret = drm_get_buffer_object(dev, &bo, r.handle); - if (ret || !bo) - return -EINVAL; + if (ret || !bo) { + ret = -EINVAL; + goto out; + } /* TODO check buffer is sufficently large */ /* TODO setup destructor callback */ fb = drm_framebuffer_create(dev); - if(!fb) - return -EINVAL;; + if (!fb) { + ret = -EINVAL; + goto out; + } fb->width = r.width; fb->height = r.height; @@ -1593,20 +1606,20 @@ int drm_mode_addfb(struct inode *inode, struct file *filp, list_add(&fb->filp_head, &priv->fbs); - if (copy_to_user(argp, &r, sizeof(r))) - return -EFAULT; + if (copy_to_user(argp, &r, sizeof(r))) { + ret = -EFAULT; + goto out; + } - /* bind the fb to the crtc for now */ - { - struct drm_crtc *crtc; - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - crtc->fb = fb; - - dev->driver->fb_probe(dev, crtc); - } + /* FIXME: bind the fb to the right crtc */ + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + crtc->fb = fb; + dev->driver->fb_probe(dev, crtc); } - return 0; +out: + spin_unlock(&dev->mode_config.config_lock); + return ret; } /** @@ -1617,7 +1630,7 @@ int drm_mode_addfb(struct inode *inode, struct file *filp, * @arg: arg from ioctl * * LOCKING: - * Caller? (FIXME) + * Takes mode config lock. * * Remove the FB specified by the user. * @@ -1633,12 +1646,15 @@ int drm_mode_rmfb(struct inode *inode, struct file *filp, drm_device_t *dev = priv->head->dev; struct drm_framebuffer *fb = 0; uint32_t id = arg; + int ret = 0; + spin_lock(&dev->mode_config.config_lock); fb = idr_find(&dev->mode_config.crtc_idr, id); /* TODO check that we realy get a framebuffer back. */ if (!fb || (id != fb->id)) { DRM_ERROR("mode invalid framebuffer id\n"); - return -EINVAL; + ret = -EINVAL; + goto out; } dev->driver->fb_remove(dev, drm_crtc_from_fb(dev, fb)); @@ -1650,7 +1666,9 @@ int drm_mode_rmfb(struct inode *inode, struct file *filp, drm_framebuffer_destroy(fb); - return 0; +out: + spin_unlock(&dev->mode_config.config_lock); + return ret; } /** @@ -1678,14 +1696,17 @@ int drm_mode_getfb(struct inode *inode, struct file *filp, struct drm_mode_fb_cmd __user *argp = (void __user *)arg; struct drm_mode_fb_cmd r; struct drm_framebuffer *fb; + int ret = 0; if (copy_from_user(&r, argp, sizeof(r))) return -EFAULT; + spin_lock(&dev->mode_config.config_lock); fb = idr_find(&dev->mode_config.crtc_idr, r.buffer_id); if (!fb || (r.buffer_id != fb->id)) { DRM_ERROR("invalid framebuffer id\n"); - return -EINVAL; + ret = -EINVAL; + goto out; } r.height = fb->height; @@ -1696,9 +1717,11 @@ int drm_mode_getfb(struct inode *inode, struct file *filp, r.pitch = fb->pitch; if (copy_to_user(argp, &r, sizeof(r))) - return -EFAULT; + ret = -EFAULT; - return 0; +out: + spin_unlock(&dev->mode_config.config_lock); + return ret; } /** @@ -1706,7 +1729,7 @@ int drm_mode_getfb(struct inode *inode, struct file *filp, * @filp: file * from the ioctl * * LOCKING: - * Caller? (FIXME) + * Takes mode config lock. * * Destroy all the FBs associated with @filp. * @@ -1721,11 +1744,13 @@ void drm_fb_release(struct file *filp) drm_device_t *dev = priv->head->dev; struct drm_framebuffer *fb, *tfb; + spin_lock(&dev->mode_config.config_lock); list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) { list_del(&fb->filp_head); dev->driver->fb_remove(dev, drm_crtc_from_fb(dev, fb)); drm_framebuffer_destroy(fb); } + spin_unlock(&dev->mode_config.config_lock); } /** @@ -1751,28 +1776,32 @@ int drm_mode_addmode(struct inode *inode, struct file *filp, struct drm_mode_modeinfo __user *argp = (void __user *)arg; struct drm_mode_modeinfo new_mode; struct drm_display_mode *user_mode; + int ret = 0; if (copy_from_user(&new_mode, argp, sizeof(new_mode))) return -EFAULT; + spin_lock(&dev->mode_config.config_lock); user_mode = drm_mode_create(dev); - if (!user_mode) - return -ENOMEM; + if (!user_mode) { + ret = -ENOMEM; + goto out; + } drm_crtc_convert_umode(user_mode, &new_mode); user_mode->type |= DRM_MODE_TYPE_USERDEF; user_mode->output_count = 0; - spin_lock(&dev->mode_config.config_lock); list_add(&user_mode->head, &dev->mode_config.usermode_list); - spin_unlock(&dev->mode_config.config_lock); new_mode.id = user_mode->mode_id; if (copy_to_user(argp, &new_mode, sizeof(new_mode))) - return -EFAULT; + ret = -EFAULT; - return 0; +out: + spin_unlock(&dev->mode_config.config_lock); + return ret; } /** @@ -1796,29 +1825,37 @@ int drm_mode_rmmode(struct inode *inode, struct file *filp, drm_device_t *dev = priv->head->dev; uint32_t id = arg; struct drm_display_mode *mode, *t; - int retcode = -EINVAL; + int ret = -EINVAL; + spin_lock(&dev->mode_config.config_lock); mode = idr_find(&dev->mode_config.crtc_idr, id); - if (!mode || (id != mode->mode_id)) - return -EINVAL; + if (!mode || (id != mode->mode_id)) { + ret = -EINVAL; + goto out; + } - if (!(mode->type & DRM_MODE_TYPE_USERDEF)) - return -EINVAL; + if (!(mode->type & DRM_MODE_TYPE_USERDEF)) { + ret = -EINVAL; + goto out; + } - if (mode->output_count) - return -EINVAL; + if (mode->output_count) { + ret = -EINVAL; + goto out; + } - spin_lock(&dev->mode_config.config_lock); list_for_each_entry(t, &dev->mode_config.usermode_list, head) { if (t == mode) { list_del(&mode->head); drm_mode_destroy(dev, mode); - retcode = 0; + ret = 0; break; } } + +out: spin_unlock(&dev->mode_config.config_lock); - return retcode; + return ret; } /** @@ -1843,18 +1880,24 @@ int drm_mode_attachmode(struct inode *inode, struct file *filp, struct drm_mode_mode_cmd mode_cmd; struct drm_output *output; struct drm_display_mode *mode; - int i; + int i, ret = 0; if (copy_from_user(&mode_cmd, argp, sizeof(mode_cmd))) return -EFAULT; + spin_lock(&dev->mode_config.config_lock); + mode = idr_find(&dev->mode_config.crtc_idr, mode_cmd.mode_id); - if (!mode || (mode->mode_id != mode_cmd.mode_id)) - return -EINVAL; + if (!mode || (mode->mode_id != mode_cmd.mode_id)) { + ret = -EINVAL; + goto out; + } output = idr_find(&dev->mode_config.crtc_idr, mode_cmd.output_id); - if (!output || (output->id != mode_cmd.output_id)) - return -EINVAL; + if (!output || (output->id != mode_cmd.output_id)) { + ret = -EINVAL; + goto out; + } for (i = 0; i < DRM_OUTPUT_MAX_UMODES; i++) { if (output->user_mode_ids[i] == 0) { @@ -1865,9 +1908,11 @@ int drm_mode_attachmode(struct inode *inode, struct file *filp, } if (i == DRM_OUTPUT_MAX_UMODES) - return -ENOSPC; + ret = -ENOSPC; - return 0; +out: + spin_unlock(&dev->mode_config.config_lock); + return ret; } @@ -1892,18 +1937,24 @@ int drm_mode_detachmode(struct inode *inode, struct file *filp, struct drm_mode_mode_cmd mode_cmd; struct drm_output *output; struct drm_display_mode *mode; - int i, found = 0; + int i, found = 0, ret = 0; if (copy_from_user(&mode_cmd, argp, sizeof(mode_cmd))) return -EFAULT; + spin_lock(&dev->mode_config.config_lock); + mode = idr_find(&dev->mode_config.crtc_idr, mode_cmd.mode_id); - if (!mode || (mode->mode_id != mode_cmd.mode_id)) - return -EINVAL; + if (!mode || (mode->mode_id != mode_cmd.mode_id)) { + ret = -EINVAL; + goto out; + } output = idr_find(&dev->mode_config.crtc_idr, mode_cmd.output_id); - if (!output || (output->id != mode_cmd.output_id)) - return -EINVAL; + if (!output || (output->id != mode_cmd.output_id)) { + ret = -EINVAL; + goto out; + } for (i = 0; i < DRM_OUTPUT_MAX_UMODES; i++) { @@ -1915,7 +1966,9 @@ int drm_mode_detachmode(struct inode *inode, struct file *filp, } if (!found) - return -EINVAL; - - return 0; + ret = -EINVAL; + +out: + spin_unlock(&dev->mode_config.config_lock); + return ret; } diff --git a/linux-core/drm_crtc.h b/linux-core/drm_crtc.h index fa143e6e..7ca8311b 100644 --- a/linux-core/drm_crtc.h +++ b/linux-core/drm_crtc.h @@ -417,7 +417,6 @@ struct drm_output { unsigned long possible_clones; bool interlace_allowed; bool doublescan_allowed; - spinlock_t modes_lock; /* protects modes and probed_modes lists */ struct list_head modes; /* list of modes on this output */ /* diff --git a/linux-core/drm_fb.c b/linux-core/drm_fb.c index 5f2b1cea..7a105d59 100644 --- a/linux-core/drm_fb.c +++ b/linux-core/drm_fb.c @@ -299,9 +299,8 @@ int drmfb_probe(struct drm_device *dev, struct drm_crtc *crtc) int ret; info = framebuffer_alloc(sizeof(struct drmfb_par), device); - if (!info){ - return -EINVAL; - } + if (!info) + return -ENOMEM; fb->fbdev = info; @@ -408,8 +407,10 @@ int drmfb_probe(struct drm_device *dev, struct drm_crtc *crtc) break; } - if (register_framebuffer(info) < 0) + if (register_framebuffer(info) < 0) { + unregister_framebuffer(info); return -EINVAL; + } printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, info->fix.id); diff --git a/linux-core/drm_modes.c b/linux-core/drm_modes.c index 97f7607d..41b5fade 100644 --- a/linux-core/drm_modes.c +++ b/linux-core/drm_modes.c @@ -141,7 +141,7 @@ EXPORT_SYMBOL(drm_mode_height); * * Return @mode's vrefresh rate or calculate it if necessary. * - * FIXME: why is this needed? + * FIXME: why is this needed? shouldn't vrefresh be set already? * * RETURNS: * Vertical refresh rate of @mode x 1000. For precision reasons. diff --git a/linux-core/intel_fb.c b/linux-core/intel_fb.c index 7126c16c..2ce66460 100644 --- a/linux-core/intel_fb.c +++ b/linux-core/intel_fb.c @@ -203,6 +203,7 @@ static int intelfb_check_var(struct fb_var_screeninfo *var, } /* this will let fbcon do the mode init */ +/* FIXME: take mode config lock? */ static int intelfb_set_par(struct fb_info *info) { struct intelfb_par *par = info->par; |