cxl: Explicitly initialize resources when media is not ready
authorDave Jiang <dave.jiang@intel.com>
Fri, 26 May 2023 00:33:01 +0000 (17:33 -0700)
committerDan Williams <dan.j.williams@intel.com>
Fri, 26 May 2023 20:34:39 +0000 (13:34 -0700)
commit793a539ac78843ef9378bb42a44edfbc552a67d5
tree6e28635e692cca814928f26f60db23d1b280fc90
parenta70fc4ed20a6118837b0aecbbf789074935f473b
cxl: Explicitly initialize resources when media is not ready

When media is not ready do not assume that the capacity information from
the identify command is valid, i.e. ->total_bytes
->partition_align_bytes ->{volatile,persistent}_only_bytes. Explicitly
zero out the capacity resources and exit early.

Given zero-init of those fields this patch is functionally equivalent to
the prior state, but it improves readability and robustness going
forward.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/168506118166.3004974.13523455340007852589.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
drivers/cxl/core/mbox.c