diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/fastrpc.c | 48 |
1 files changed, 29 insertions, 19 deletions
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index 986c9aee539a..8e43f3d85bfd 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -283,6 +283,7 @@ static void fastrpc_context_free(struct kref *ref) { struct fastrpc_invoke_ctx *ctx; struct fastrpc_channel_ctx *cctx; + unsigned long flags; int i; ctx = container_of(ref, struct fastrpc_invoke_ctx, refcount); @@ -294,9 +295,9 @@ static void fastrpc_context_free(struct kref *ref) if (ctx->buf) fastrpc_buf_free(ctx->buf); - spin_lock(&cctx->lock); + spin_lock_irqsave(&cctx->lock, flags); idr_remove(&cctx->ctx_idr, ctx->ctxid >> 4); - spin_unlock(&cctx->lock); + spin_unlock_irqrestore(&cctx->lock, flags); kfree(ctx->maps); kfree(ctx); @@ -326,6 +327,7 @@ static struct fastrpc_invoke_ctx *fastrpc_context_alloc( { struct fastrpc_channel_ctx *cctx = user->cctx; struct fastrpc_invoke_ctx *ctx = NULL; + unsigned long flags; int ret; ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); @@ -360,15 +362,15 @@ static struct fastrpc_invoke_ctx *fastrpc_context_alloc( list_add_tail(&ctx->node, &user->pending); spin_unlock(&user->lock); - spin_lock(&cctx->lock); + spin_lock_irqsave(&cctx->lock, flags); ret = idr_alloc_cyclic(&cctx->ctx_idr, ctx, 1, FASTRPC_CTX_MAX, GFP_ATOMIC); if (ret < 0) { - spin_unlock(&cctx->lock); + spin_unlock_irqrestore(&cctx->lock, flags); goto err_idr; } ctx->ctxid = ret << 4; - spin_unlock(&cctx->lock); + spin_unlock_irqrestore(&cctx->lock, flags); kref_init(&ctx->refcount); @@ -948,9 +950,10 @@ static struct fastrpc_session_ctx *fastrpc_session_alloc( struct fastrpc_channel_ctx *cctx) { struct fastrpc_session_ctx *session = NULL; + unsigned long flags; int i; - spin_lock(&cctx->lock); + spin_lock_irqsave(&cctx->lock, flags); for (i = 0; i < cctx->sesscount; i++) { if (!cctx->session[i].used && cctx->session[i].valid) { cctx->session[i].used = true; @@ -958,7 +961,7 @@ static struct fastrpc_session_ctx *fastrpc_session_alloc( break; } } - spin_unlock(&cctx->lock); + spin_unlock_irqrestore(&cctx->lock, flags); return session; } @@ -966,9 +969,11 @@ static struct fastrpc_session_ctx *fastrpc_session_alloc( static void fastrpc_session_free(struct fastrpc_channel_ctx *cctx, struct fastrpc_session_ctx *session) { - spin_lock(&cctx->lock); + unsigned long flags; + + spin_lock_irqsave(&cctx->lock, flags); session->used = false; - spin_unlock(&cctx->lock); + spin_unlock_irqrestore(&cctx->lock, flags); } static int fastrpc_release_current_dsp_process(struct fastrpc_user *fl) @@ -994,12 +999,13 @@ static int fastrpc_device_release(struct inode *inode, struct file *file) struct fastrpc_channel_ctx *cctx = fl->cctx; struct fastrpc_invoke_ctx *ctx, *n; struct fastrpc_map *map, *m; + unsigned long flags; fastrpc_release_current_dsp_process(fl); - spin_lock(&cctx->lock); + spin_lock_irqsave(&cctx->lock, flags); list_del(&fl->user); - spin_unlock(&cctx->lock); + spin_unlock_irqrestore(&cctx->lock, flags); if (fl->init_mem) fastrpc_buf_free(fl->init_mem); @@ -1027,6 +1033,7 @@ static int fastrpc_device_open(struct inode *inode, struct file *filp) { struct fastrpc_channel_ctx *cctx = miscdev_to_cctx(filp->private_data); struct fastrpc_user *fl = NULL; + unsigned long flags; fl = kzalloc(sizeof(*fl), GFP_KERNEL); if (!fl) @@ -1050,9 +1057,9 @@ static int fastrpc_device_open(struct inode *inode, struct file *filp) return -EBUSY; } - spin_lock(&cctx->lock); + spin_lock_irqsave(&cctx->lock, flags); list_add_tail(&fl->user, &cctx->users); - spin_unlock(&cctx->lock); + spin_unlock_irqrestore(&cctx->lock, flags); return 0; } @@ -1208,6 +1215,7 @@ static int fastrpc_cb_probe(struct platform_device *pdev) struct fastrpc_session_ctx *sess; struct device *dev = &pdev->dev; int i, sessions = 0; + unsigned long flags; cctx = dev_get_drvdata(dev->parent); if (!cctx) @@ -1215,7 +1223,7 @@ static int fastrpc_cb_probe(struct platform_device *pdev) of_property_read_u32(dev->of_node, "qcom,nsessions", &sessions); - spin_lock(&cctx->lock); + spin_lock_irqsave(&cctx->lock, flags); sess = &cctx->session[cctx->sesscount]; sess->used = false; sess->valid = true; @@ -1236,7 +1244,7 @@ static int fastrpc_cb_probe(struct platform_device *pdev) } } cctx->sesscount++; - spin_unlock(&cctx->lock); + spin_unlock_irqrestore(&cctx->lock, flags); dma_set_mask(dev, DMA_BIT_MASK(32)); return 0; @@ -1246,16 +1254,17 @@ static int fastrpc_cb_remove(struct platform_device *pdev) { struct fastrpc_channel_ctx *cctx = dev_get_drvdata(pdev->dev.parent); struct fastrpc_session_ctx *sess = dev_get_drvdata(&pdev->dev); + unsigned long flags; int i; - spin_lock(&cctx->lock); + spin_lock_irqsave(&cctx->lock, flags); for (i = 1; i < FASTRPC_MAX_SESSIONS; i++) { if (cctx->session[i].sid == sess->sid) { cctx->session[i].valid = false; cctx->sesscount--; } } - spin_unlock(&cctx->lock); + spin_unlock_irqrestore(&cctx->lock, flags); return 0; } @@ -1337,11 +1346,12 @@ static void fastrpc_rpmsg_remove(struct rpmsg_device *rpdev) { struct fastrpc_channel_ctx *cctx = dev_get_drvdata(&rpdev->dev); struct fastrpc_user *user; + unsigned long flags; - spin_lock(&cctx->lock); + spin_lock_irqsave(&cctx->lock, flags); list_for_each_entry(user, &cctx->users, user) fastrpc_notify_users(user); - spin_unlock(&cctx->lock); + spin_unlock_irqrestore(&cctx->lock, flags); misc_deregister(&cctx->miscdev); of_platform_depopulate(&rpdev->dev); |