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staging: r8188eu: Fix compiler warnings in os_dep/ioctl_linux.c 

The 0-DAY kernel build testing backend reports the following compiler
warnings not shown on my compiler version/options:

   drivers/staging/rtl8188eu/os_dep/ioctl_linux.c: In function 'rtw_mp_efuse_get':
>> drivers/staging/rtl8188eu/os_dep/ioctl_linux.c:5836:65: warning: iteration 16u invokes undefined behavior [-Waggressive-loop-optimizations]
        sprintf(extra, "%s%02X ", extra, pEfuseHal->fakeEfuseInitMap[i+j]);
                                                                    ^
   drivers/staging/rtl8188eu/os_dep/ioctl_linux.c:5830:3: note: containing loop
      for (i = 0; i < EFUSE_MAP_SIZE; i += 16) {
      ^
>> drivers/staging/rtl8188eu/os_dep/ioctl_linux.c:6042:69: warning: iteration 16u invokes undefined behavior [-Waggressive-loop-optimizations]
        sprintf(extra, "%s %02X", extra, pEfuseHal->fakeEfuseModifiedMap[i+j]);
                                                                        ^
   drivers/staging/rtl8188eu/os_dep/ioctl_linux.c:6036:3: note: containing loop
      for (i = 0; i < EFUSE_MAP_SIZE; i += 16) {
      ^

The problem is due to improper settings for some of the EFUSE_XXX defines such that
EFUSE_MAP_SIZE was larger than the sizes of the marked arrays. Thanks to
Fengguang Wu for helping me understand the root cause.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Larry Finger 2013-08-28 21:12:25 -05:00 committed by Greg Kroah-Hartman
parent 351699d7eb
commit 40fac5a132
2 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/staging/rtl8188eu/include/rtl8188e_hal.h
View File

@ -197,7 +197,6 @@ struct txpowerinfo24g {
};
#define EFUSE_REAL_CONTENT_LEN 512
#define EFUSE_MAP_LEN 128
#define EFUSE_MAX_SECTION 16
#define EFUSE_IC_ID_OFFSET 506 /* For some inferior IC purpose*/
#define AVAILABLE_EFUSE_ADDR(addr) (addr < EFUSE_REAL_CONTENT_LEN)
@ -215,6 +214,7 @@ struct txpowerinfo24g {
#define EFUSE_REAL_CONTENT_LEN_88E 256
#define EFUSE_MAP_LEN_88E 512
#define EFUSE_MAP_LEN EFUSE_MAP_LEN_88E
#define EFUSE_MAX_SECTION_88E 64
#define EFUSE_MAX_WORD_UNIT_88E 4
#define EFUSE_IC_ID_OFFSET_88E 506

2
drivers/staging/rtl8188eu/include/rtw_efuse.h
View File

@ -54,7 +54,7 @@ enum _EFUSE_DEF_TYPE {
#define EFUSE_MAX_SIZE 256
/* end of E-Fuse */
#define EFUSE_MAX_MAP_LEN 256
#define EFUSE_MAX_MAP_LEN 512
#define EFUSE_MAX_HW_SIZE 512
#define EFUSE_MAX_SECTION_BASE 16