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| author | Takashi Iwai <tiwai@suse.de> | 2017-10-04 16:15:59 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2017-10-11 15:14:32 +0200 |
| commit | e901b9873876ca30a09253731bd3a6b00c44b5b0 (patch) | |
| tree | 9d9c10973fdf8162552f9428eec373137f44f353 /drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.h | |
| parent | Linux 4.14-rc4 (diff) | |
| download | linux-e901b9873876ca30a09253731bd3a6b00c44b5b0.tar.gz linux-e901b9873876ca30a09253731bd3a6b00c44b5b0.zip | |
usb: core: Add a helper function to check the validity of EP type in URB
This patch adds a new helper function to perform a sanity check of the
given URB to see whether it contains a valid endpoint. It's a light-
weight version of what usb_submit_urb() does, but without the kernel
warning followed by the stack trace, just returns an error code.
Especially for a driver that doesn't parse the descriptor but fills
the URB with the fixed endpoint (e.g. some quirks for non-compliant
devices), this kind of check is preferable at the probe phase before
actually submitting the urb.
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.h')
0 files changed, 0 insertions, 0 deletions