Commit 3b97cc29 authored by Russell King's avatar Russell King

[MMC] Fix UNSTUFF_BITS

Quieten down compiler warnings, and fix an off-by-one bug when
deciding whether to include the next word.
parent 2e20fb91
......@@ -301,14 +301,15 @@ static u32 mmc_select_voltage(struct mmc_host *host, u32 ocr)
#define UNSTUFF_BITS(resp,start,size) \
({ \
const u32 __mask = (1 << (size)) - 1; \
const int __size = size; \
const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \
const int __off = 3 - ((start) / 32); \
const int __shft = (start) & 31; \
u32 __res; \
\
__res = resp[__off] >> __shft; \
if ((size) + __shft >= 32) \
__res |= resp[__off-1] << (32 - __shft); \
if (__size + __shft > 32) \
__res |= resp[__off-1] << ((32 - __shft) % 32); \
__res & __mask; \
})
......
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