Commit cb3fd74a authored by Abhinav Kumar's avatar Abhinav Kumar Committed by Rob Clark
Browse files

drm/msm/dp: delete unnecessary debugfs error handling 



Currently the error checking logic in the dp_debug module could
pass zero to PTR_ERR and it causes the below kbot warnings:

drivers/gpu/drm/msm/dp/dp_debug.c:378 dp_debug_init()
warn: passing zero to 'PTR_ERR'
drivers/gpu/drm/msm/dp/dp_debug.c:387 dp_debug_init()
warn: passing zero to 'PTR_ERR'
drivers/gpu/drm/msm/dp/dp_debug.c:396 dp_debug_init()
warn: passing zero to 'PTR_ERR'
drivers/gpu/drm/msm/dp/dp_debug.c:405 dp_debug_init()
warn: passing zero to 'PTR_ERR'

Debugfs functions are not supposed to be checked in the normal
case so delete this code.  Also it silences the above Smatch
warnings that we're checking for NULL when these functions only
return error pointers.

Reported-by: default avatarkernel test robot <lkp@intel.com>
Reported-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarAbhinav Kumar <abhinavk@codeaurora.org>
Reviewed-by: default avatarStephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1614971839-2686-3-git-send-email-abhinavk@codeaurora.org


Signed-off-by: default avatarRob Clark <robdclark@chromium.org>
parent 7d649cfe

drivers/gpu/drm/msm/dp/dp_debug.c

+4 −27
Original line number Diff line number Diff line
@@ -368,44 +368,21 @@ static int dp_debug_init(struct dp_debug *dp_debug, struct drm_minor *minor) 
	int rc = 0;

	struct dp_debug_private *debug = container_of(dp_debug,

			struct dp_debug_private, dp_debug);

	struct dentry *file;

	struct dentry *test_active;

	struct dentry *test_data, *test_type;



	file = debugfs_create_file("dp_debug", 0444, minor->debugfs_root,

	debugfs_create_file("dp_debug", 0444, minor->debugfs_root,

			debug, &dp_debug_fops);

	if (IS_ERR_OR_NULL(file)) {

		rc = PTR_ERR(file);

		DRM_ERROR("[%s] debugfs create file failed, rc=%d\n",

				  DEBUG_NAME, rc);

	}



	test_active = debugfs_create_file("msm_dp_test_active", 0444,

	debugfs_create_file("msm_dp_test_active", 0444,

			minor->debugfs_root,

			debug, &test_active_fops);

	if (IS_ERR_OR_NULL(test_active)) {

		rc = PTR_ERR(test_active);

		DRM_ERROR("[%s] debugfs test_active failed, rc=%d\n",

				  DEBUG_NAME, rc);

	}



	test_data = debugfs_create_file("msm_dp_test_data", 0444,

	debugfs_create_file("msm_dp_test_data", 0444,

			minor->debugfs_root,

			debug, &dp_test_data_fops);

	if (IS_ERR_OR_NULL(test_data)) {

		rc = PTR_ERR(test_data);

		DRM_ERROR("[%s] debugfs test_data failed, rc=%d\n",

				  DEBUG_NAME, rc);

	}



	test_type = debugfs_create_file("msm_dp_test_type", 0444,

	debugfs_create_file("msm_dp_test_type", 0444,

			minor->debugfs_root,

			debug, &dp_test_type_fops);

	if (IS_ERR_OR_NULL(test_type)) {

		rc = PTR_ERR(test_type);

		DRM_ERROR("[%s] debugfs test_type failed, rc=%d\n",

				  DEBUG_NAME, rc);

	}



	debug->root = minor->debugfs_root;