2012-02-07 03:31:17

by Asai Thambi SP

Subject: [PATCH v2 resend] mtip32xx: removed the irrelevant argument of mtip_hw_submit_io() and the unused member of struct driver_data

Resending the patch in plain text format.

From: Asai Thambi S P <[email protected]>

Removed the following:
* irrelevant argument 'barrier' of mtip_hw_submit_io()
* unused member 'eh_active' of struct driver_data

Signed-off-by: Asai Thambi S P <[email protected]>
Signed-off-by: Sam Bradshaw <[email protected]>
---
drivers/block/mtip32xx/mtip32xx.c | 11 +++++------
drivers/block/mtip32xx/mtip32xx.h | 5 -----
2 files changed, 5 insertions(+), 11 deletions(-)

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index b74eab7..8eb81c9 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -2068,8 +2068,6 @@ static int mtip_hw_ioctl(struct driver_data *dd, unsigned int cmd,
* when the read completes.
* @data Callback data passed to the callback function
* when the read completes.
- * @barrier If non-zero, this command must be completed before
- * issuing any other commands.
* @dir Direction (read or write)
*
* return value
@@ -2077,7 +2075,7 @@ static int mtip_hw_ioctl(struct driver_data *dd, unsigned int cmd,
*/
static void mtip_hw_submit_io(struct driver_data *dd, sector_t start,
int nsect, int nents, int tag, void *callback,
- void *data, int barrier, int dir)
+ void *data, int dir)
{
struct host_to_dev_fis *fis;
struct mtip_port *port = dd->port;
@@ -2108,8 +2106,6 @@ static void mtip_hw_submit_io(struct driver_data *dd, sector_t start,
*((unsigned int *) &fis->lba_low) = (start & 0xFFFFFF);
*((unsigned int *) &fis->lba_low_ex) = ((start >> 24) & 0xFFFFFF);
fis->device = 1 << 6;
- if (barrier)
- fis->device |= FUA_BIT;
fis->features = nsect & 0xFF;
fis->features_ex = (nsect >> 8) & 0xFF;
fis->sect_count = ((tag << 3) | (tag >> 5));
@@ -3087,7 +3083,6 @@ static void mtip_make_request(struct request_queue *queue, struct bio *bio)
tag,
bio_endio,
bio,
- bio->bi_rw & REQ_FUA,
bio_data_dir(bio));
} else
bio_io_error(bio);
@@ -3187,6 +3182,10 @@ skip_create_disk:
blk_queue_max_segments(dd->queue, MTIP_MAX_SG);
blk_queue_physical_block_size(dd->queue, 4096);
blk_queue_io_min(dd->queue, 4096);
+ /*
+ * write back cache is not supported in the device. FUA depends on
+ * write back cache support, hence setting flush support to zero.
+ */
blk_queue_flush(dd->queue, 0);

/* Set the capacity of the device in 512 byte sectors. */
diff --git a/drivers/block/mtip32xx/mtip32xx.h b/drivers/block/mtip32xx/mtip32xx.h
index 723d7c4..e0554a8 100644
--- a/drivers/block/mtip32xx/mtip32xx.h
+++ b/drivers/block/mtip32xx/mtip32xx.h
@@ -104,9 +104,6 @@
/* BAR number used to access the HBA registers. */
#define MTIP_ABAR 5

-/* Forced Unit Access Bit */
-#define FUA_BIT 0x80
-
#ifdef DEBUG
#define dbg_printk(format, arg...) \
printk(pr_fmt(format), ##arg);
@@ -415,8 +412,6 @@ struct driver_data {

atomic_t resumeflag; /* Atomic variable to track suspend/resume */

- atomic_t eh_active; /* Flag for error handling tracking */
-
struct task_struct *mtip_svc_handler; /* task_struct of svc thd */
};

--

2012-02-07 06:55:58

by Jens Axboe

Subject: Re: [PATCH v2 resend] mtip32xx: removed the irrelevant argument of mtip_hw_submit_io() and the unused member of struct driver_data

On 02/07/2012 04:15 AM, Asai Thambi Samymuthu Pattrayasamy (asamymuthupa) [CONT - Type 2] wrote:
> Resending the patch in plain text format.
>
> From: Asai Thambi S P <[email protected]>
>
> Removed the following:
> * irrelevant argument 'barrier' of mtip_hw_submit_io()
> * unused member 'eh_active' of struct driver_data

Thanks, applied.

--
Jens Axboe