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author | Michael Sevakis <jethead71@rockbox.org> | 2008-03-12 10:03:52 +0000 |
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committer | Michael Sevakis <jethead71@rockbox.org> | 2008-03-12 10:03:52 +0000 |
commit | 06a5299aff38ba25c7742ae6293c588e38445f8b (patch) | |
tree | 5f8c3121882ba9c8d6317d1ce7fb5a07d3a99f5c /firmware/drivers/fat.c | |
parent | 2f5a37de5c45333453169ffe0b90e0f380d1cd50 (diff) | |
download | rockbox-06a5299aff38ba25c7742ae6293c588e38445f8b.tar.gz rockbox-06a5299aff38ba25c7742ae6293c588e38445f8b.zip |
Do some crackdown on kernel object reinitialization after they could be in use and use before initialization. For c200/e200: Be sure fat cache and ata locks are acquired in the proper order during hot swapping. Delay hotswap monitoring until after initial file mounting (address 2nd kobj concern + possible call of fat driver before init).
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16636 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/drivers/fat.c')
-rw-r--r-- | firmware/drivers/fat.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/firmware/drivers/fat.c b/firmware/drivers/fat.c index 9dd27cf72a..f3374fc4c4 100644 --- a/firmware/drivers/fat.c +++ b/firmware/drivers/fat.c | |||
@@ -172,6 +172,7 @@ struct bpb | |||
172 | }; | 172 | }; |
173 | 173 | ||
174 | static struct bpb fat_bpbs[NUM_VOLUMES]; /* mounted partition info */ | 174 | static struct bpb fat_bpbs[NUM_VOLUMES]; /* mounted partition info */ |
175 | static bool initialized = false; | ||
175 | 176 | ||
176 | static int update_fsinfo(IF_MV_NONVOID(struct bpb* fat_bpb)); | 177 | static int update_fsinfo(IF_MV_NONVOID(struct bpb* fat_bpb)); |
177 | static int flush_fat(IF_MV_NONVOID(struct bpb* fat_bpb)); | 178 | static int flush_fat(IF_MV_NONVOID(struct bpb* fat_bpb)); |
@@ -202,6 +203,18 @@ static char fat_cache_sectors[FAT_CACHE_SIZE][SECTOR_SIZE]; | |||
202 | static struct fat_cache_entry fat_cache[FAT_CACHE_SIZE]; | 203 | static struct fat_cache_entry fat_cache[FAT_CACHE_SIZE]; |
203 | static struct mutex cache_mutex NOCACHEBSS_ATTR; | 204 | static struct mutex cache_mutex NOCACHEBSS_ATTR; |
204 | 205 | ||
206 | #ifdef HAVE_HOTSWAP | ||
207 | void fat_lock(void) | ||
208 | { | ||
209 | mutex_lock(&cache_mutex); | ||
210 | } | ||
211 | |||
212 | void fat_unlock(void) | ||
213 | { | ||
214 | mutex_unlock(&cache_mutex); | ||
215 | } | ||
216 | #endif | ||
217 | |||
205 | static long cluster2sec(IF_MV2(struct bpb* fat_bpb,) long cluster) | 218 | static long cluster2sec(IF_MV2(struct bpb* fat_bpb,) long cluster) |
206 | { | 219 | { |
207 | #ifndef HAVE_MULTIVOLUME | 220 | #ifndef HAVE_MULTIVOLUME |
@@ -240,7 +253,11 @@ void fat_init(void) | |||
240 | { | 253 | { |
241 | unsigned int i; | 254 | unsigned int i; |
242 | 255 | ||
243 | mutex_init(&cache_mutex); | 256 | if (!initialized) |
257 | { | ||
258 | initialized = true; | ||
259 | mutex_init(&cache_mutex); | ||
260 | } | ||
244 | 261 | ||
245 | /* mark the FAT cache as unused */ | 262 | /* mark the FAT cache as unused */ |
246 | for(i = 0;i < FAT_CACHE_SIZE;i++) | 263 | for(i = 0;i < FAT_CACHE_SIZE;i++) |