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authorBart Van Assche <bvanassche@acm.org>2023-08-01 16:21:50 -0700
committerMartin K. Petersen <martin.petersen@oracle.com>2023-08-07 21:12:32 -0400
commitc306f746fee55b07d92dc768f3167f5b27a677db (patch)
treebbe552227a01ad0aca9a5c45ba9eb3bf1bcdc9f8 /drivers/ufs
parent21f04fb4e8ca4a6a88c76b1ddf9ea94e6c118005 (diff)
scsi: ufs: core: Fix the build for gcc 9 and before
gcc compilers before version 10 cannot do constant-folding for sub-byte bitfields. This makes the compiler layout tests fail. Hence skip the layout checks for gcc 9 and before. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Naresh Kamboju <naresh.kamboju@linaro.org> Cc: Nathan Chancellor <nathan@kernel.org> Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Closes: https://lore.kernel.org/linux-scsi/CA+G9fYur8UJoUyTLJFVEJPh-15TJ7kbdD2q8xVz8a3fLjkxxVw@mail.gmail.com/ Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20230801232204.1481902-1-bvanassche@acm.org Tested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/ufs')
-rw-r--r--drivers/ufs/core/ufshcd.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 9f43b03f3b72..8b5ee1a7d454 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -10527,6 +10527,14 @@ static const struct dev_pm_ops ufshcd_wl_pm_ops = {
static void ufshcd_check_header_layout(void)
{
+ /*
+ * gcc compilers before version 10 cannot do constant-folding for
+ * sub-byte bitfields. Hence skip the layout checks for gcc 9 and
+ * before.
+ */
+ if (IS_ENABLED(CONFIG_CC_IS_GCC) && CONFIG_GCC_VERSION < 100000)
+ return;
+
BUILD_BUG_ON(((u8 *)&(struct request_desc_header){
.cci = 3})[0] != 3);