Searched hist:"7 e4da3fc" (Results 1 – 1 of 1) sorted by relevance
/openbmc/linux/drivers/usb/gadget/ |
H A D | composite.c | 7e4da3fc Tue Dec 20 12:52:16 CST 2016 Krzysztof Opasiak <k.opasiak@samsung.com> usb: gadget: composite: Test get_alt() presence instead of set_alt()
By convention (according to doc) if function does not provide get_alt() callback composite framework should assume that it has only altsetting 0 and should respond with error if host tries to set other one.
After commit dd4dff8b035f ("USB: composite: Fix bug: should test set_alt function pointer before use it") we started checking set_alt() callback instead of get_alt(). This check is useless as we check if set_alt() is set inside usb_add_function() and fail if it's NULL.
Let's fix this check and move comment about why we check the get method instead of set a little bit closer to prevent future false fixes.
Fixes: dd4dff8b035f ("USB: composite: Fix bug: should test set_alt function pointer before use it") Cc: stable <stable@vger.kernel.org> Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> 7e4da3fc Tue Dec 20 12:52:16 CST 2016 Krzysztof Opasiak <k.opasiak@samsung.com> usb: gadget: composite: Test get_alt() presence instead of set_alt() By convention (according to doc) if function does not provide get_alt() callback composite framework should assume that it has only altsetting 0 and should respond with error if host tries to set other one. After commit dd4dff8b035f ("USB: composite: Fix bug: should test set_alt function pointer before use it") we started checking set_alt() callback instead of get_alt(). This check is useless as we check if set_alt() is set inside usb_add_function() and fail if it's NULL. Let's fix this check and move comment about why we check the get method instead of set a little bit closer to prevent future false fixes. Fixes: dd4dff8b035f ("USB: composite: Fix bug: should test set_alt function pointer before use it") Cc: stable <stable@vger.kernel.org> Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
|