d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mmc: dwmmc: Fix off by one error

Browse Source 
The IVAR_MAX_DATA is supposed to have the number of descriptor X the mmc
block size and desc_count contain all this information + 1.

Reported by:	phk
MFC after:	1 week
This commit is contained in:
Emmanuel Vadot 2020-02-28 21:31:40 +00:00
parent 4ec9d1370f
commit d5151ea87a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=358450
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sys/dev/mmc/host/dwmmc.c
View File

@ -1278,7 +1278,7 @@ dwmmc_read_ivar(device_t bus, device_t child, int which, uintptr_t *result)
*(int *)result = sc->host.caps;
break;
case MMCBR_IVAR_MAX_DATA:
*(int *)result = sc->desc_count;
*(int *)result = sc->desc_count - 1;
break;
case MMCBR_IVAR_TIMING:
*(int *)result = sc->host.ios.timing;