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R0.11 with patch 1

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March 9, 2015

At the thread-safe configuration (_FS_REENTRANT == 1), an unexpected
operation to the volume can result a wrong volume lock. For example,
f_open() ==> media change ==> f_close(), in this case the volume gets
left locked and following function calls to the volume will be locked
out until a forced initialization of the volume by f_mount(). To solve
this problem, apply this patch to the ff.c.
This commit is contained in:
Christopher Williams
2015-03-11 10:29:46 -07:00
parent 9acb379950
commit 095cc0fc01
1 changed files with 1 additions and 4 deletions
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src/ff.c
+1 -4
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@@ -2329,14 +2329,11 @@ FRESULT validate ( /* FR_OK(0): The object is valid, !=0: Invalid */
FIL *fil = (FIL*)obj; /* Assuming offset of .fs and .id in the FIL/DIR structure is identical */
if (!fil || !fil->fs || !fil->fs->fs_type || fil->fs->id != fil->id)
if (!fil || !fil->fs || !fil->fs->fs_type || fil->fs->id != fil->id || (disk_status(fil->fs->drv) & STA_NOINIT))
return FR_INVALID_OBJECT;
ENTER_FF(fil->fs); /* Lock file system */
if (disk_status(fil->fs->drv) & STA_NOINIT)
return FR_NOT_READY;
return FR_OK;
}