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OpenCloudOS-Kernel
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc 

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  mmc: Avoid re-using minor numbers before the original device is closed.
  tifm_sd: handle non-power-of-2 block sizes
  mmc_block: check card state after write
This commit is contained in:
Linus Torvalds 2007-11-26 19:25:23 -08:00
parent bb40784f4a 1dff314451
commit 64d0793109
2 changed files with 20 additions and 20 deletions
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22
drivers/mmc/card/block.c
View File

@ -44,6 +44,9 @@
* max 8 partitions per card
*/
#define MMC_SHIFT 3
#define MMC_NUM_MINORS (256 >> MMC_SHIFT)
static unsigned long dev_use[MMC_NUM_MINORS/(8*sizeof(unsigned long))];
/*
* There is one mmc_blk_data per slot.
@ -80,6 +83,9 @@ static void mmc_blk_put(struct mmc_blk_data *md)
mutex_lock(&open_lock);
md->usage--;
if (md->usage == 0) {
int devidx = md->disk->first_minor >> MMC_SHIFT;
__clear_bit(devidx, dev_use);
put_disk(md->disk);
kfree(md);
}
@ -321,7 +327,13 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
req->rq_disk->disk_name, err);
goto cmd_err;
}
} while (!(cmd.resp[0] & R1_READY_FOR_DATA));
/*
* Some cards mishandle the status bits,
* so make sure to check both the busy
* indication and the card state.
*/
} while (!(cmd.resp[0] & R1_READY_FOR_DATA) ||
(R1_CURRENT_STATE(cmd.resp[0]) == 7));
#if 0
if (cmd.resp[0] & ~0x00000900)
@ -400,9 +412,6 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
return 0;
}
#define MMC_NUM_MINORS (256 >> MMC_SHIFT)
static unsigned long dev_use[MMC_NUM_MINORS/(8*sizeof(unsigned long))];
static inline int mmc_blk_readonly(struct mmc_card *card)
{
@ -568,17 +577,12 @@ static void mmc_blk_remove(struct mmc_card *card)
struct mmc_blk_data *md = mmc_get_drvdata(card);
if (md) {
int devidx;
/* Stop new requests from getting into the queue */
del_gendisk(md->disk);
/* Then flush out any already in there */
mmc_cleanup_queue(&md->queue);
devidx = md->disk->first_minor >> MMC_SHIFT;
__clear_bit(devidx, dev_use);
mmc_blk_put(md);
}
mmc_set_drvdata(card, NULL);

18
drivers/mmc/host/tifm_sd.c
View File

@ -16,7 +16,6 @@
#include <linux/mmc/host.h>
#include <linux/highmem.h>
#include <linux/scatterlist.h>
#include <linux/log2.h>
#include <asm/io.h>
#define DRIVER_NAME "tifm_sd"
@ -638,17 +637,15 @@ static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq)
goto err_out;
}
if (mrq->data && !is_power_of_2(mrq->data->blksz)) {
printk(KERN_ERR "%s: Unsupported block size (%d bytes)\n",
sock->dev.bus_id, mrq->data->blksz);
mrq->cmd->error = -EINVAL;
goto err_out;
}
host->cmd_flags = 0;
host->block_pos = 0;
host->sg_pos = 0;
if (mrq->data && !is_power_of_2(mrq->data->blksz))
host->no_dma = 1;
else
host->no_dma = no_dma ? 1 : 0;
if (r_data) {
tifm_sd_set_data_timeout(host, r_data);
@ -676,7 +673,7 @@ static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq)
: PCI_DMA_FROMDEVICE)) {
printk(KERN_ERR "%s : scatterlist map failed\n",
sock->dev.bus_id);
spin_unlock_irqrestore(&sock->lock, flags);
mrq->cmd->error = -ENOMEM;
goto err_out;
}
host->sg_len = tifm_map_sg(sock, r_data->sg,
@ -692,7 +689,7 @@ static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq)
r_data->flags & MMC_DATA_WRITE
? PCI_DMA_TODEVICE
: PCI_DMA_FROMDEVICE);
spin_unlock_irqrestore(&sock->lock, flags);
mrq->cmd->error = -ENOMEM;
goto err_out;
}
@ -966,7 +963,6 @@ static int tifm_sd_probe(struct tifm_dev *sock)
return -ENOMEM;
host = mmc_priv(mmc);
host->no_dma = no_dma;
tifm_set_drvdata(sock, mmc);
host->dev = sock;
host->timeout_jiffies = msecs_to_jiffies(1000);