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authorEdward Cree <ecree@solarflare.com>2020-08-12 11:32:49 +0200
committerDavid S. Miller <davem@davemloft.net>2020-08-12 21:54:03 +0200
commit41077c99026643c633a1f79376d369fffc757e06 (patch)
treea053399130b4914940f9a900a6c4175f2f1ed8ae /net
parentMerge branch 'net-initialize-fastreuse-on-inet_inherit_port' (diff)
downloadlinux-41077c99026643c633a1f79376d369fffc757e06.tar.xz
linux-41077c99026643c633a1f79376d369fffc757e06.zip
sfc: fix ef100 design-param checking
The handling of the RXQ/TXQ size granularity design-params had two problems: it had a 64-bit divide that didn't build on 32-bit platforms, and it could divide by zero if the NIC supplied 0 as the value of the design-param. Fix both by checking for 0 and for a granularity bigger than our min-size; if the granularity <= EFX_MIN_DMAQ_SIZE then it fits in 32 bits, so we can cast it to u32 for the divide. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
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