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| author | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-02-12 22:03:09 +0100 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-03-15 18:21:07 +0100 |
| commit | 884cfd9023ce6afe8bcf181ec988d8516eb32bf0 (patch) | |
| tree | f57f5eafe52a568ac90e25b64f8e6a0e9d37e993 /drivers/mtd/mtdoops.c | |
| parent | dcba51bbb9e0cc7f80d36eb20a033a4dff2ce9cc (diff) | |
| download | linux-884cfd9023ce6afe8bcf181ec988d8516eb32bf0.tar.bz2 | |
mtd: Stop assuming mtd_erase() is asynchronous
None of the mtd->_erase() implementations work in an asynchronous manner,
so let's simplify MTD users that call mtd_erase(). All they need to do
is check the value returned by mtd_erase() and assume that != 0 means
failure.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'drivers/mtd/mtdoops.c')
| -rw-r--r-- | drivers/mtd/mtdoops.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c index 97bb8f6304d4..028ded59297b 100644 --- a/drivers/mtd/mtdoops.c +++ b/drivers/mtd/mtdoops.c @@ -84,12 +84,6 @@ static int page_is_used(struct mtdoops_context *cxt, int page) return test_bit(page, cxt->oops_page_used); } -static void mtdoops_erase_callback(struct erase_info *done) -{ - wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv; - wake_up(wait_q); -} - static int mtdoops_erase_block(struct mtdoops_context *cxt, int offset) { struct mtd_info *mtd = cxt->mtd; @@ -97,34 +91,21 @@ static int mtdoops_erase_block(struct mtdoops_context *cxt, int offset) u32 start_page = start_page_offset / record_size; u32 erase_pages = mtd->erasesize / record_size; struct erase_info erase; - DECLARE_WAITQUEUE(wait, current); - wait_queue_head_t wait_q; int ret; int page; - init_waitqueue_head(&wait_q); erase.mtd = mtd; - erase.callback = mtdoops_erase_callback; erase.addr = offset; erase.len = mtd->erasesize; - erase.priv = (u_long)&wait_q; - - set_current_state(TASK_INTERRUPTIBLE); - add_wait_queue(&wait_q, &wait); ret = mtd_erase(mtd, &erase); if (ret) { - set_current_state(TASK_RUNNING); - remove_wait_queue(&wait_q, &wait); printk(KERN_WARNING "mtdoops: erase of region [0x%llx, 0x%llx] on \"%s\" failed\n", (unsigned long long)erase.addr, (unsigned long long)erase.len, mtddev); return ret; } - schedule(); /* Wait for erase to finish. */ - remove_wait_queue(&wait_q, &wait); - /* Mark pages as unused */ for (page = start_page; page < start_page + erase_pages; page++) mark_page_unused(cxt, page); |