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path: root/drivers/media/video/s5p-mfc/s5p_mfc.c
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Diffstat (limited to 'drivers/media/video/s5p-mfc/s5p_mfc.c')
-rw-r--r--drivers/media/video/s5p-mfc/s5p_mfc.c81
1 files changed, 26 insertions, 55 deletions
diff --git a/drivers/media/video/s5p-mfc/s5p_mfc.c b/drivers/media/video/s5p-mfc/s5p_mfc.c
index 83fe461..9bb68e7 100644
--- a/drivers/media/video/s5p-mfc/s5p_mfc.c
+++ b/drivers/media/video/s5p-mfc/s5p_mfc.c
@@ -70,7 +70,7 @@ static void wake_up_dev(struct s5p_mfc_dev *dev, unsigned int reason,
wake_up(&dev->queue);
}
-void s5p_mfc_watchdog(unsigned long arg)
+static void s5p_mfc_watchdog(unsigned long arg)
{
struct s5p_mfc_dev *dev = (struct s5p_mfc_dev *)arg;
@@ -373,7 +373,7 @@ static void s5p_mfc_handle_error(struct s5p_mfc_ctx *ctx,
/* If no context is available then all necessary
* processing has been done. */
- if (ctx == 0)
+ if (ctx == NULL)
return;
dev = ctx->dev;
@@ -429,7 +429,7 @@ static void s5p_mfc_handle_seq_done(struct s5p_mfc_ctx *ctx,
struct s5p_mfc_dev *dev;
unsigned int guard_width, guard_height;
- if (ctx == 0)
+ if (ctx == NULL)
return;
dev = ctx->dev;
if (ctx->c_ops->post_seq_start) {
@@ -496,7 +496,7 @@ static void s5p_mfc_handle_init_buffers(struct s5p_mfc_ctx *ctx,
struct s5p_mfc_dev *dev;
unsigned long flags;
- if (ctx == 0)
+ if (ctx == NULL)
return;
dev = ctx->dev;
s5p_mfc_clear_int_flags(dev);
@@ -772,7 +772,7 @@ err_queue_init:
err_init_hw:
s5p_mfc_release_firmware(dev);
err_alloc_fw:
- dev->ctx[ctx->num] = 0;
+ dev->ctx[ctx->num] = NULL;
del_timer_sync(&dev->watchdog_timer);
s5p_mfc_clock_off();
err_pwr_enable:
@@ -849,7 +849,7 @@ static int s5p_mfc_release(struct file *file)
}
mfc_debug(2, "Shutting down clock\n");
s5p_mfc_clock_off();
- dev->ctx[ctx->num] = 0;
+ dev->ctx[ctx->num] = NULL;
s5p_mfc_dec_ctrls_delete(ctx);
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
@@ -948,7 +948,7 @@ static int s5p_mfc_probe(struct platform_device *pdev)
int ret;
pr_debug("%s++\n", __func__);
- dev = kzalloc(sizeof *dev, GFP_KERNEL);
+ dev = devm_kzalloc(&pdev->dev, sizeof *dev, GFP_KERNEL);
if (!dev) {
dev_err(&pdev->dev, "Not enough memory for MFC device\n");
return -ENOMEM;
@@ -959,49 +959,35 @@ static int s5p_mfc_probe(struct platform_device *pdev)
dev->plat_dev = pdev;
if (!dev->plat_dev) {
dev_err(&pdev->dev, "No platform data specified\n");
- ret = -ENODEV;
- goto err_dev;
+ return -ENODEV;
}
ret = s5p_mfc_init_pm(dev);
if (ret < 0) {
dev_err(&pdev->dev, "failed to get mfc clock source\n");
- goto err_clk;
+ return ret;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
- dev_err(&pdev->dev, "failed to get memory region resource\n");
- ret = -ENOENT;
- goto err_res;
- }
- dev->mfc_mem = request_mem_region(res->start, resource_size(res),
- pdev->name);
- if (dev->mfc_mem == NULL) {
- dev_err(&pdev->dev, "failed to get memory region\n");
- ret = -ENOENT;
- goto err_mem_reg;
- }
- dev->regs_base = ioremap(dev->mfc_mem->start, resource_size(dev->mfc_mem));
+ dev->regs_base = devm_request_and_ioremap(&pdev->dev, res);
if (dev->regs_base == NULL) {
- dev_err(&pdev->dev, "failed to ioremap address region\n");
- ret = -ENOENT;
- goto err_ioremap;
+ dev_err(&pdev->dev, "Failed to obtain io memory\n");
+ return -ENOENT;
}
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (res == NULL) {
dev_err(&pdev->dev, "failed to get irq resource\n");
ret = -ENOENT;
- goto err_get_res;
+ goto err_res;
}
dev->irq = res->start;
- ret = request_irq(dev->irq, s5p_mfc_irq, IRQF_DISABLED, pdev->name,
- dev);
+ ret = devm_request_irq(&pdev->dev, dev->irq, s5p_mfc_irq,
+ IRQF_DISABLED, pdev->name, dev);
if (ret) {
dev_err(&pdev->dev, "Failed to install irq (%d)\n", ret);
- goto err_req_irq;
+ goto err_res;
}
dev->mem_dev_l = device_find_child(&dev->plat_dev->dev, "s5p-mfc-l",
@@ -1009,20 +995,20 @@ static int s5p_mfc_probe(struct platform_device *pdev)
if (!dev->mem_dev_l) {
mfc_err("Mem child (L) device get failed\n");
ret = -ENODEV;
- goto err_find_child;
+ goto err_res;
}
dev->mem_dev_r = device_find_child(&dev->plat_dev->dev, "s5p-mfc-r",
match_child);
if (!dev->mem_dev_r) {
mfc_err("Mem child (R) device get failed\n");
ret = -ENODEV;
- goto err_find_child;
+ goto err_res;
}
dev->alloc_ctx[0] = vb2_dma_contig_init_ctx(dev->mem_dev_l);
if (IS_ERR_OR_NULL(dev->alloc_ctx[0])) {
ret = PTR_ERR(dev->alloc_ctx[0]);
- goto err_mem_init_ctx_0;
+ goto err_res;
}
dev->alloc_ctx[1] = vb2_dma_contig_init_ctx(dev->mem_dev_r);
if (IS_ERR_OR_NULL(dev->alloc_ctx[1])) {
@@ -1048,6 +1034,10 @@ static int s5p_mfc_probe(struct platform_device *pdev)
vfd->ioctl_ops = get_dec_v4l2_ioctl_ops();
vfd->release = video_device_release,
vfd->lock = &dev->mfc_mutex;
+ /* Locking in file operations other than ioctl should be done
+ by the driver, not the V4L2 core.
+ This driver needs auditing so that this flag can be removed. */
+ set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags);
vfd->v4l2_dev = &dev->v4l2_dev;
snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_DEC_NAME);
dev->vfd_dec = vfd;
@@ -1072,6 +1062,8 @@ static int s5p_mfc_probe(struct platform_device *pdev)
vfd->ioctl_ops = get_enc_v4l2_ioctl_ops();
vfd->release = video_device_release,
vfd->lock = &dev->mfc_mutex;
+ /* This should not be necessary */
+ set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags);
vfd->v4l2_dev = &dev->v4l2_dev;
snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_ENC_NAME);
dev->vfd_enc = vfd;
@@ -1110,22 +1102,9 @@ err_v4l2_dev_reg:
vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[1]);
err_mem_init_ctx_1:
vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[0]);
-err_mem_init_ctx_0:
-err_find_child:
- free_irq(dev->irq, dev);
-err_req_irq:
-err_get_res:
- iounmap(dev->regs_base);
- dev->regs_base = NULL;
-err_ioremap:
- release_resource(dev->mfc_mem);
- kfree(dev->mfc_mem);
-err_mem_reg:
err_res:
s5p_mfc_final_pm(dev);
-err_clk:
-err_dev:
- kfree(dev);
+
pr_debug("%s-- with error\n", __func__);
return ret;
@@ -1148,15 +1127,7 @@ static int __devexit s5p_mfc_remove(struct platform_device *pdev)
vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[0]);
vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[1]);
- free_irq(dev->irq, dev);
- iounmap(dev->regs_base);
- if (dev->mfc_mem) {
- release_resource(dev->mfc_mem);
- kfree(dev->mfc_mem);
- dev->mfc_mem = NULL;
- }
s5p_mfc_final_pm(dev);
- kfree(dev);
return 0;
}
generated by cgit v0.10.2 at 2024-07-11 17:34:11 (GMT)