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mtip32xx: get rid of 'atomic' argument to mtip_exec_internal_command() 

All callers can safely block. Kill the atomic/block argument, and
remove the argument from all callers.

Reviewed-by: Bart Van Assche <Bart.VanAssche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Jens Axboe 2017-04-27 16:29:26 -06:00
parent c033269490
commit 0f6422a2c5
1 changed files with 43 additions and 105 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

148
drivers/block/mtip32xx/mtip32xx.c
View File

@ -609,11 +609,6 @@ static void mtip_completion(struct mtip_port *port,
complete(waiting);
}
static void mtip_null_completion(struct mtip_port *port,
int tag, struct mtip_cmd *command, int status)
{
}
static int mtip_read_log_page(struct mtip_port *port, u8 page, u16 *buffer,
dma_addr_t buffer_dma, unsigned int sectors);
static int mtip_get_smart_attr(struct mtip_port *port, unsigned int id,
@ -1117,7 +1112,6 @@ static int mtip_exec_internal_command(struct mtip_port *port,
dma_addr_t buffer,
int buf_len,
u32 opts,
gfp_t atomic,
unsigned long timeout)
{
struct mtip_cmd_sg *command_sg;
@ -1146,30 +1140,22 @@ static int mtip_exec_internal_command(struct mtip_port *port,
clear_bit(MTIP_PF_DM_ACTIVE_BIT, &port->flags);
if (atomic == GFP_KERNEL) {
if (fis->command != ATA_CMD_STANDBYNOW1) {
/* wait for io to complete if non atomic */
if (mtip_quiesce_io(port,
MTIP_QUIESCE_IO_TIMEOUT_MS, atomic) < 0) {
dev_warn(&dd->pdev->dev,
"Failed to quiesce IO\n");
mtip_put_int_command(dd, int_cmd);
clear_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags);
wake_up_interruptible(&port->svc_wait);
return -EBUSY;
}
if (fis->command != ATA_CMD_STANDBYNOW1) {
/* wait for io to complete if non atomic */
if (mtip_quiesce_io(port,
MTIP_QUIESCE_IO_TIMEOUT_MS, GFP_KERNEL) < 0) {
dev_warn(&dd->pdev->dev, "Failed to quiesce IO\n");
mtip_put_int_command(dd, int_cmd);
clear_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags);
wake_up_interruptible(&port->svc_wait);
return -EBUSY;
}
/* Set the completion function and data for the command. */
int_cmd->comp_data = &wait;
int_cmd->comp_func = mtip_completion;
} else {
/* Clear completion - we're going to poll */
int_cmd->comp_data = NULL;
int_cmd->comp_func = mtip_null_completion;
}
/* Set the completion function and data for the command. */
int_cmd->comp_data = &wait;
int_cmd->comp_func = mtip_completion;
/* Copy the command to the command table */
memcpy(int_cmd->command, fis, fis_len*4);
@ -1198,81 +1184,41 @@ static int mtip_exec_internal_command(struct mtip_port *port,
/* Issue the command to the hardware */
mtip_issue_non_ncq_command(port, MTIP_TAG_INTERNAL);
if (atomic == GFP_KERNEL) {
/* Wait for the command to complete or timeout. */
if ((rv = wait_for_completion_interruptible_timeout(
&wait,
msecs_to_jiffies(timeout))) <= 0) {
/* Wait for the command to complete or timeout. */
rv = wait_for_completion_interruptible_timeout(&wait,
msecs_to_jiffies(timeout));
if (rv <= 0) {
if (rv == -ERESTARTSYS) { /* interrupted */
dev_err(&dd->pdev->dev,
"Internal command [%02X] was interrupted after %u ms\n",
fis->command,
jiffies_to_msecs(jiffies - start));
rv = -EINTR;
goto exec_ic_exit;
} else if (rv == 0) /* timeout */
dev_err(&dd->pdev->dev,
"Internal command did not complete [%02X] within timeout of %lu ms\n",
fis->command, timeout);
else
dev_err(&dd->pdev->dev,
"Internal command [%02X] wait returned code [%d] after %lu ms - unhandled\n",
fis->command, rv, timeout);
if (rv == -ERESTARTSYS) { /* interrupted */
dev_err(&dd->pdev->dev,
"Internal command [%02X] was interrupted after %u ms\n",
fis->command,
jiffies_to_msecs(jiffies - start));
rv = -EINTR;
goto exec_ic_exit;
} else if (rv == 0) /* timeout */
dev_err(&dd->pdev->dev,
"Internal command did not complete [%02X] within timeout of %lu ms\n",
fis->command, timeout);
else
dev_err(&dd->pdev->dev,
"Internal command [%02X] wait returned code [%d] after %lu ms - unhandled\n",
fis->command, rv, timeout);
if (mtip_check_surprise_removal(dd->pdev) ||
test_bit(MTIP_DDF_REMOVE_PENDING_BIT,
&dd->dd_flag)) {
dev_err(&dd->pdev->dev,
"Internal command [%02X] wait returned due to SR\n",
fis->command);
rv = -ENXIO;
goto exec_ic_exit;
}
mtip_device_reset(dd); /* recover from timeout issue */
rv = -EAGAIN;
if (mtip_check_surprise_removal(dd->pdev) ||
test_bit(MTIP_DDF_REMOVE_PENDING_BIT,
&dd->dd_flag)) {
dev_err(&dd->pdev->dev,
"Internal command [%02X] wait returned due to SR\n",
fis->command);
rv = -ENXIO;
goto exec_ic_exit;
}
} else {
u32 hba_stat, port_stat;
/* Spin for <timeout> checking if command still outstanding */
timeout = jiffies + msecs_to_jiffies(timeout);
while ((readl(port->cmd_issue[MTIP_TAG_INTERNAL])
& (1 << MTIP_TAG_INTERNAL))
&& time_before(jiffies, timeout)) {
if (mtip_check_surprise_removal(dd->pdev)) {
rv = -ENXIO;
goto exec_ic_exit;
}
if ((fis->command != ATA_CMD_STANDBYNOW1) &&
test_bit(MTIP_DDF_REMOVE_PENDING_BIT,
&dd->dd_flag)) {
rv = -ENXIO;
goto exec_ic_exit;
}
port_stat = readl(port->mmio + PORT_IRQ_STAT);
if (!port_stat)
continue;
if (port_stat & PORT_IRQ_ERR) {
dev_err(&dd->pdev->dev,
"Internal command [%02X] failed\n",
fis->command);
mtip_device_reset(dd);
rv = -EIO;
goto exec_ic_exit;
} else {
writel(port_stat, port->mmio + PORT_IRQ_STAT);
hba_stat = readl(dd->mmio + HOST_IRQ_STAT);
if (hba_stat)
writel(hba_stat,
dd->mmio + HOST_IRQ_STAT);
}
break;
}
mtip_device_reset(dd); /* recover from timeout issue */
rv = -EAGAIN;
goto exec_ic_exit;
}
rv = 0;
if (readl(port->cmd_issue[MTIP_TAG_INTERNAL])
& (1 << MTIP_TAG_INTERNAL)) {
rv = -ENXIO;
@ -1391,7 +1337,6 @@ static int mtip_get_identify(struct mtip_port *port, void __user *user_buffer)
port->identify_dma,
sizeof(u16) * ATA_ID_WORDS,
0,
GFP_KERNEL,
MTIP_INT_CMD_TIMEOUT_MS)
< 0) {
rv = -1;
@ -1477,7 +1422,6 @@ static int mtip_standby_immediate(struct mtip_port *port)
0,
0,
0,
GFP_ATOMIC,
timeout);
dbg_printk(MTIP_DRV_NAME "Time taken to complete standby cmd: %d ms\n",
jiffies_to_msecs(jiffies - start));
@ -1523,7 +1467,6 @@ static int mtip_read_log_page(struct mtip_port *port, u8 page, u16 *buffer,
buffer_dma,
sectors * ATA_SECT_SIZE,
0,
GFP_ATOMIC,
MTIP_INT_CMD_TIMEOUT_MS);
}
@ -1558,7 +1501,6 @@ static int mtip_get_smart_data(struct mtip_port *port, u8 *buffer,
buffer_dma,
ATA_SECT_SIZE,
0,
GFP_ATOMIC,
15000);
}
@ -1686,7 +1628,6 @@ static int mtip_send_trim(struct driver_data *dd, unsigned int lba,
dma_addr,
ATA_SECT_SIZE,
0,
GFP_KERNEL,
MTIP_TRIM_TIMEOUT_MS) < 0)
rv = -EIO;
@ -1850,7 +1791,6 @@ static int exec_drive_task(struct mtip_port *port, u8 *command)
0,
0,
0,
GFP_KERNEL,
to) < 0) {
return -1;
}
@ -1946,7 +1886,6 @@ static int exec_drive_command(struct mtip_port *port, u8 *command,
(xfer_sz ? dma_addr : 0),
(xfer_sz ? ATA_SECT_SIZE * xfer_sz : 0),
0,
GFP_KERNEL,
to)
< 0) {
rv = -EFAULT;
@ -2189,7 +2128,6 @@ static int exec_drive_taskfile(struct driver_data *dd,
dma_buffer,
transfer_size,
0,
GFP_KERNEL,
timeout) < 0) {
err = -EIO;
goto abort;