summaryrefslogtreecommitdiffstats
path: root/drivers/block
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/DAC960.c1
-rw-r--r--drivers/block/ataflop.c2
-rw-r--r--drivers/block/cciss.c1
-rw-r--r--drivers/block/loop.c1
-rw-r--r--drivers/block/mg_disk.c101
-rw-r--r--drivers/block/virtio_blk.c12
-rw-r--r--drivers/block/z2ram.c2
7 files changed, 70 insertions, 50 deletions
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index 668dc234b8e2..1e6b7c14f697 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -36,6 +36,7 @@
#include <linux/ioport.h>
#include <linux/mm.h>
#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <linux/proc_fs.h>
#include <linux/reboot.h>
#include <linux/spinlock.h>
diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c
index f5e7180d7f47..3ff02941b3dd 100644
--- a/drivers/block/ataflop.c
+++ b/drivers/block/ataflop.c
@@ -1627,7 +1627,7 @@ static int fd_ioctl(struct block_device *bdev, fmode_t mode,
drive, dtp->blocks, dtp->spt, dtp->stretch);
/* sanity check */
- if (!dtp || setprm.track != dtp->blocks/dtp->spt/2 ||
+ if (setprm.track != dtp->blocks/dtp->spt/2 ||
setprm.head != 2) {
redo_fd_request();
return -EINVAL;
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 65a0655e7fc8..a52cc7fe45ea 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -26,6 +26,7 @@
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <linux/delay.h>
#include <linux/major.h>
#include <linux/fs.h>
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 801f4ab83302..5757188cd1fb 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -61,7 +61,6 @@
#include <linux/blkdev.h>
#include <linux/blkpg.h>
#include <linux/init.h>
-#include <linux/smp_lock.h>
#include <linux/swap.h>
#include <linux/slab.h>
#include <linux/loop.h>
diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c
index f703f5478246..6d7fbaa92248 100644
--- a/drivers/block/mg_disk.c
+++ b/drivers/block/mg_disk.c
@@ -36,7 +36,6 @@
/* Register offsets */
#define MG_BUFF_OFFSET 0x8000
-#define MG_STORAGE_BUFFER_SIZE 0x200
#define MG_REG_OFFSET 0xC000
#define MG_REG_FEATURE (MG_REG_OFFSET + 2) /* write case */
#define MG_REG_ERROR (MG_REG_OFFSET + 2) /* read case */
@@ -219,6 +218,16 @@ static unsigned int mg_wait(struct mg_host *host, u32 expect, u32 msec)
host->error = MG_ERR_NONE;
expire = jiffies + msecs_to_jiffies(msec);
+ /* These 2 times dummy status read prevents reading invalid
+ * status. A very little time (3 times of mflash operating clk)
+ * is required for busy bit is set. Use dummy read instead of
+ * busy wait, because mflash's PLL is machine dependent.
+ */
+ if (prv_data->use_polling) {
+ status = inb((unsigned long)host->dev_base + MG_REG_STATUS);
+ status = inb((unsigned long)host->dev_base + MG_REG_STATUS);
+ }
+
status = inb((unsigned long)host->dev_base + MG_REG_STATUS);
do {
@@ -245,8 +254,6 @@ static unsigned int mg_wait(struct mg_host *host, u32 expect, u32 msec)
mg_dump_status("not ready", status, host);
return MG_ERR_INV_STAT;
}
- if (prv_data->use_polling)
- msleep(1);
status = inb((unsigned long)host->dev_base + MG_REG_STATUS);
} while (time_before(cur_jiffies, expire));
@@ -469,9 +476,18 @@ static unsigned int mg_out(struct mg_host *host,
return MG_ERR_NONE;
}
+static void mg_read_one(struct mg_host *host, struct request *req)
+{
+ u16 *buff = (u16 *)req->buffer;
+ u32 i;
+
+ for (i = 0; i < MG_SECTOR_SIZE >> 1; i++)
+ *buff++ = inw((unsigned long)host->dev_base + MG_BUFF_OFFSET +
+ (i << 1));
+}
+
static void mg_read(struct request *req)
{
- u32 j;
struct mg_host *host = req->rq_disk->private_data;
if (mg_out(host, blk_rq_pos(req), blk_rq_sectors(req),
@@ -482,49 +498,65 @@ static void mg_read(struct request *req)
blk_rq_sectors(req), blk_rq_pos(req), req->buffer);
do {
- u16 *buff = (u16 *)req->buffer;
-
if (mg_wait(host, ATA_DRQ,
MG_TMAX_WAIT_RD_DRQ) != MG_ERR_NONE) {
mg_bad_rw_intr(host);
return;
}
- for (j = 0; j < MG_SECTOR_SIZE >> 1; j++)
- *buff++ = inw((unsigned long)host->dev_base +
- MG_BUFF_OFFSET + (j << 1));
+
+ mg_read_one(host, req);
outb(MG_CMD_RD_CONF, (unsigned long)host->dev_base +
MG_REG_COMMAND);
} while (mg_end_request(host, 0, MG_SECTOR_SIZE));
}
+static void mg_write_one(struct mg_host *host, struct request *req)
+{
+ u16 *buff = (u16 *)req->buffer;
+ u32 i;
+
+ for (i = 0; i < MG_SECTOR_SIZE >> 1; i++)
+ outw(*buff++, (unsigned long)host->dev_base + MG_BUFF_OFFSET +
+ (i << 1));
+}
+
static void mg_write(struct request *req)
{
- u32 j;
struct mg_host *host = req->rq_disk->private_data;
+ unsigned int rem = blk_rq_sectors(req);
- if (mg_out(host, blk_rq_pos(req), blk_rq_sectors(req),
+ if (mg_out(host, blk_rq_pos(req), rem,
MG_CMD_WR, NULL) != MG_ERR_NONE) {
mg_bad_rw_intr(host);
return;
}
MG_DBG("requested %d sects (from %ld), buffer=0x%p\n",
- blk_rq_sectors(req), blk_rq_pos(req), req->buffer);
+ rem, blk_rq_pos(req), req->buffer);
+
+ if (mg_wait(host, ATA_DRQ,
+ MG_TMAX_WAIT_WR_DRQ) != MG_ERR_NONE) {
+ mg_bad_rw_intr(host);
+ return;
+ }
do {
- u16 *buff = (u16 *)req->buffer;
+ mg_write_one(host, req);
- if (mg_wait(host, ATA_DRQ, MG_TMAX_WAIT_WR_DRQ) != MG_ERR_NONE) {
+ outb(MG_CMD_WR_CONF, (unsigned long)host->dev_base +
+ MG_REG_COMMAND);
+
+ rem--;
+ if (rem > 1 && mg_wait(host, ATA_DRQ,
+ MG_TMAX_WAIT_WR_DRQ) != MG_ERR_NONE) {
+ mg_bad_rw_intr(host);
+ return;
+ } else if (mg_wait(host, MG_STAT_READY,
+ MG_TMAX_WAIT_WR_DRQ) != MG_ERR_NONE) {
mg_bad_rw_intr(host);
return;
}
- for (j = 0; j < MG_SECTOR_SIZE >> 1; j++)
- outw(*buff++, (unsigned long)host->dev_base +
- MG_BUFF_OFFSET + (j << 1));
-
- outb(MG_CMD_WR_CONF, (unsigned long)host->dev_base +
- MG_REG_COMMAND);
} while (mg_end_request(host, 0, MG_SECTOR_SIZE));
}
@@ -532,7 +564,6 @@ static void mg_read_intr(struct mg_host *host)
{
struct request *req = host->req;
u32 i;
- u16 *buff;
/* check status */
do {
@@ -550,13 +581,7 @@ static void mg_read_intr(struct mg_host *host)
return;
ok_to_read:
- /* get current segment of request */
- buff = (u16 *)req->buffer;
-
- /* read 1 sector */
- for (i = 0; i < MG_SECTOR_SIZE >> 1; i++)
- *buff++ = inw((unsigned long)host->dev_base + MG_BUFF_OFFSET +
- (i << 1));
+ mg_read_one(host, req);
MG_DBG("sector %ld, remaining=%ld, buffer=0x%p\n",
blk_rq_pos(req), blk_rq_sectors(req) - 1, req->buffer);
@@ -575,8 +600,7 @@ ok_to_read:
static void mg_write_intr(struct mg_host *host)
{
struct request *req = host->req;
- u32 i, j;
- u16 *buff;
+ u32 i;
bool rem;
/* check status */
@@ -597,12 +621,7 @@ static void mg_write_intr(struct mg_host *host)
ok_to_write:
if ((rem = mg_end_request(host, 0, MG_SECTOR_SIZE))) {
/* write 1 sector and set handler if remains */
- buff = (u16 *)req->buffer;
- for (j = 0; j < MG_STORAGE_BUFFER_SIZE >> 1; j++) {
- outw(*buff, (unsigned long)host->dev_base +
- MG_BUFF_OFFSET + (j << 1));
- buff++;
- }
+ mg_write_one(host, req);
MG_DBG("sector %ld, remaining=%ld, buffer=0x%p\n",
blk_rq_pos(req), blk_rq_sectors(req), req->buffer);
host->mg_do_intr = mg_write_intr;
@@ -667,9 +686,6 @@ static unsigned int mg_issue_req(struct request *req,
unsigned int sect_num,
unsigned int sect_cnt)
{
- u16 *buff;
- u32 i;
-
switch (rq_data_dir(req)) {
case READ:
if (mg_out(host, sect_num, sect_cnt, MG_CMD_RD, &mg_read_intr)
@@ -693,12 +709,7 @@ static unsigned int mg_issue_req(struct request *req,
mg_bad_rw_intr(host);
return host->error;
}
- buff = (u16 *)req->buffer;
- for (i = 0; i < MG_SECTOR_SIZE >> 1; i++) {
- outw(*buff, (unsigned long)host->dev_base +
- MG_BUFF_OFFSET + (i << 1));
- buff++;
- }
+ mg_write_one(host, req);
mod_timer(&host->timer, jiffies + 3 * HZ);
outb(MG_CMD_WR_CONF, (unsigned long)host->dev_base +
MG_REG_COMMAND);
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 43db3ea15b54..aa1a3d5a3e2b 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -213,7 +213,7 @@ static int virtblk_ioctl(struct block_device *bdev, fmode_t mode,
* Only allow the generic SCSI ioctls if the host can support it.
*/
if (!virtio_has_feature(vblk->vdev, VIRTIO_BLK_F_SCSI))
- return -ENOIOCTLCMD;
+ return -ENOTTY;
return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp);
}
@@ -360,6 +360,9 @@ static int __devinit virtblk_probe(struct virtio_device *vdev)
blk_queue_max_phys_segments(vblk->disk->queue, vblk->sg_elems-2);
blk_queue_max_hw_segments(vblk->disk->queue, vblk->sg_elems-2);
+ /* No need to bounce any requests */
+ blk_queue_bounce_limit(vblk->disk->queue, BLK_BOUNCE_ANY);
+
/* No real sector limit. */
blk_queue_max_sectors(vblk->disk->queue, -1U);
@@ -424,7 +427,12 @@ static unsigned int features[] = {
VIRTIO_BLK_F_SCSI, VIRTIO_BLK_F_IDENTIFY
};
-static struct virtio_driver virtio_blk = {
+/*
+ * virtio_blk causes spurious section mismatch warning by
+ * simultaneously referring to a __devinit and a __devexit function.
+ * Use __refdata to avoid this warning.
+ */
+static struct virtio_driver __refdata virtio_blk = {
.feature_table = features,
.feature_table_size = ARRAY_SIZE(features),
.driver.name = KBUILD_MODNAME,
diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c
index 4575171e5beb..b2590409f25e 100644
--- a/drivers/block/z2ram.c
+++ b/drivers/block/z2ram.c
@@ -374,7 +374,7 @@ err:
static void __exit z2_exit(void)
{
int i, j;
- blk_unregister_region(MKDEV(Z2RAM_MAJOR, 0), 256);
+ blk_unregister_region(MKDEV(Z2RAM_MAJOR, 0), Z2MINOR_COUNT);
unregister_blkdev(Z2RAM_MAJOR, DEVICE_NAME);
del_gendisk(z2ram_gendisk);
put_disk(z2ram_gendisk);
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-27 14:05:05 +0200