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author | Takashi Iwai <tiwai@suse.de> | 2017-10-04 16:15:59 +0200 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-25 11:07:45 +0100 |
commit | ebf7d035c39a70756a9b68a6a670ee8a39ecc586 (patch) | |
tree | bc4dda38235c4844b942c842b1d194255d40c3f0 /drivers/vhost | |
parent | 58056a531e440061142a4481358ebb365193df5e (diff) |
usb: core: Add a helper function to check the validity of EP type in URB
commit e901b9873876ca30a09253731bd3a6b00c44b5b0 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/vhost')
0 files changed, 0 insertions, 0 deletions