beecadea1b
The macro bit(n) is defined as ((u32)1 << n), and thus it doesn't work
with n >= 32, such as in mvs_94xx_assign_reg_set():
if (i >= 32) {
mvi->sata_reg_set |= bit(i);
...
}
The shift ((u32)1 << n) with n >= 32 also leads to undefined behavior.
The result varies depending on the architecture.
This patch changes bit(n) to do a 64-bit shift. It also simplifies
mv_ffc64() using __ffs64(), since invoking ffz() with ~0 is undefined.
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Acked-by: Xiangliang Yu <yuxiangl@marvell.com>
Cc: stable@vger.kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| mv_64xx.c | ||
| mv_64xx.h | ||
| mv_94xx.c | ||
| mv_94xx.h | ||
| mv_chips.h | ||
| mv_defs.h | ||
| mv_init.c | ||
| mv_sas.c | ||
| mv_sas.h | ||