Re: [PATCH] mmc: core: don't initialize block size from ext_csd if not present

Hi Peter,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on hch-configfs/for-next v5.11-rc3 next-20210113]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Peter-Collingbourne/mmc-core-don-t-initialize-block-size-from-ext_csd-if-not-present/20210113-054414
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git e609571b5ffa3528bf85292de1ceaddac342bc1c
config: x86_64-rhel (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/562a77dc6c88601c5129c0bbb9141119494320c7
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Peter-Collingbourne/mmc-core-don-t-initialize-block-size-from-ext_csd-if-not-present/20210113-054414
        git checkout 562a77dc6c88601c5129c0bbb9141119494320c7
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All errors (new ones prefixed by >>, old ones prefixed by <<):

quoted

ERROR: modpost: "mmc_can_ext_csd" [drivers/mmc/core/mmc_block.ko] undefined!

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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org