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authorKhalid Masum <khalid.masum.92@gmail.com>2022-08-24 22:38:13 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-08-31 10:07:53 +0300
commitd27c66adb4c0b16c817f71ba96e90f322e7419af (patch)
treeda43a6faca6ba7cb368fce24a7d88c714fa93708 /include/linux
parent4348f2e3ab3358898bfe93387ced7f3e1e3a6186 (diff)
downloadlinux-d27c66adb4c0b16c817f71ba96e90f322e7419af.tar.xz
usb: ehci: Use endpoint in URB to get maxpacket
usb_maxpacket() looks up the endpoint number in the pipe which can fail if the interface or configuration changes before the routine is called. This is unexpected and may even cause a modulo by zero afterwards. So use usb_endpoint_maxp() routine which uses the endpoint stored in URB to get the maxpacket. Suggested-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Khalid Masum <khalid.masum.92@gmail.com> Addresses-Coverity: 744857 ("Division or modulo by zero") Addresses-Coverity: 1487371 ("Division or modulo by zero") Link: https://lore.kernel.org/r/20220824193813.13129-1-khalid.masum.92@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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