diff mbox series

[4/4] drm/udl: Replace BUG_ON() with WARN_ON()

Message ID 20220804075826.27036-5-tiwai@suse.de (mailing list archive)
State New, archived
Headers show
Series drm/udl: Fix stray URBs and cleanup | expand

Commit Message

Takashi Iwai Aug. 4, 2022, 7:58 a.m. UTC 
BUG_ON() is a tasteless choice as a sanity check for a driver like UDL
that isn't really a core code.  Replace with WARN_ON() and proper
error handling instead.

Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 drivers/gpu/drm/udl/udl_main.c     | 3 ++-
 drivers/gpu/drm/udl/udl_transfer.c | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c
index 47204b7eb10e..fdafbf8f3c3c 100644
--- a/drivers/gpu/drm/udl/udl_main.c
+++ b/drivers/gpu/drm/udl/udl_main.c
@@ -260,7 +260,8 @@  int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len)
 	struct udl_device *udl = to_udl(dev);
 	int ret;
 
-	BUG_ON(len > udl->urbs.size);
+	if (WARN_ON(len > udl->urbs.size))
+		return -EINVAL;
 
 	urb->transfer_buffer_length = len; /* set to actual payload len */
 	ret = usb_submit_urb(urb, GFP_ATOMIC);
diff --git a/drivers/gpu/drm/udl/udl_transfer.c b/drivers/gpu/drm/udl/udl_transfer.c
index 971927669d6b..176ef2a6a731 100644
--- a/drivers/gpu/drm/udl/udl_transfer.c
+++ b/drivers/gpu/drm/udl/udl_transfer.c
@@ -220,7 +220,8 @@  int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr,
 	u8 *cmd = *urb_buf_ptr;
 	u8 *cmd_end = (u8 *) urb->transfer_buffer + urb->transfer_buffer_length;
 
-	BUG_ON(!(log_bpp == 1 || log_bpp == 2));
+	if (WARN_ON(!(log_bpp == 1 || log_bpp == 2)))
+		return -EINVAL;
 
 	line_start = (u8 *) (front + byte_offset);
 	next_pixel = line_start;