This patch is based on the latest linux-next. So the Fixes commit-id
maybe changed when it merged int v5.12-rc1. For details about the problem
analysis, see the patch description. The auxiliary information is listed here.
1) the type of size_t on 32-bit and 64-bit platforms
include/uapi/asm-generic/posix_types.h:
typedef unsigned long __kernel_ulong_t;
#if __BITS_PER_LONG != 64
typedef unsigned int __kernel_size_t;
#else
typedef __kernel_ulong_t __kernel_size_t;
#endif
include/linux/types.h:
typedef __kernel_size_t size_t;
2) The compilation warning information on arm64:
In file included from ./include/linux/kernel.h:14,
from ./include/linux/clk.h:13,
from drivers/spi/spi-cadence-quadspi.c:9:
drivers/spi/spi-cadence-quadspi.c: In function ???cqspi_direct_read_execute???:
./include/linux/minmax.h:18:28: warning: comparison of distinct pointer types
lacks a cast
18 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
| ^~
./include/linux/minmax.h:32:4: note: in expansion of macro ???__typecheck???
32 | (__typecheck(x, y) && __no_side_effects(x, y))
| ^~~~~~~~~~~
./include/linux/minmax.h:42:24: note: in expansion of macro ???__safe_cmp???
42 | __builtin_choose_expr(__safe_cmp(x, y), \
| ^~~~~~~~~~
./include/linux/minmax.h:58:19: note: in expansion of macro ???__careful_cmp???
58 | #define max(x, y) __careful_cmp(x, y, >)
| ^~~~~~~~~~~~~
drivers/spi/spi-cadence-quadspi.c:1153:24: note: in expansion of macro ???max???
1153 | msecs_to_jiffies(max(len, 500U)))) {
| ^~~
Zhen Lei (1):
spi: cadence-quadspi: Fix a compilation warning for 64-bit platform
drivers/spi/spi-cadence-quadspi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--
1.8.3
