On Tue, Dec 24, 2013 at 04:19:18AM +0000, Marius Silaghi wrote: > From: Marius C Silaghi <msilaghi@xxxxxxx> > > This patch is generated against the last kernel version in the github kernel repository. We work off of the git.kernel.org trees, not github :) > Some older families of USB2 cameras (STC-XXXXXUSB) do not support querying only the first 8 bytes of their > device descriptor and therefore fail at enumeration on USB3 HCDs, with babble error -75 as they send more than > the expected 8 bytes. The proposed patch extends the mechanism used for non USB3 HCDs in the first part of > the same function, and successively tries to query both the 8 byte prefix of the device descriptor, as well as > the whole device descriptor (in case the old style query of the 8 byte prefix fails). > In fact, for the cameras I try to fix, the preferred condition is the negation of the one in the proposed patch, > "if (!USE_NEW_SCHEME(retry_counter))", to try first the version successful on this case, but I keep the > current order of the "if" branches to ensure clean continuation of support for other supported devices. > > Signed-off-by: Marius C Silaghi <msilaghi@xxxxxxx> I'll let Sarah take this patch, if it passes her testing. thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
