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block: IBM RamSan 70/80 trivial changes.

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This patch includes trivial changes that were recommended by
different members of the Linux Community.

Changes include:
o Removing the redundant wmb().
o Formatting
o Various other little things.

Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Philip J Kelleher 2013-02-25 12:27:46 -06:00 committed by Jens Axboe
parent f6161aa153
commit f37912039e
5 changed files with 11 additions and 30 deletions
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6
drivers/block/rsxx/config.c
View file

@ -29,10 +29,8 @@
#include "rsxx_priv.h"
#include "rsxx_cfg.h"
static void initialize_config(void *config)
static void initialize_config(struct rsxx_card_cfg *cfg)
{
struct rsxx_card_cfg *cfg = config;
cfg->hdr.version = RSXX_CFG_VERSION;
cfg->data.block_size = RSXX_HW_BLK_SIZE;
@ -181,7 +179,7 @@ int rsxx_load_config(struct rsxx_cardinfo *card)
} else {
dev_info(CARD_TO_DEV(card),
"Initializing card configuration.\n");
initialize_config(card);
initialize_config(&card->config);
st = rsxx_save_config(card);
if (st)
return st;

4
drivers/block/rsxx/core.c
View file

@ -161,9 +161,9 @@ static irqreturn_t rsxx_isr(int irq, void *pdata)
}
/*----------------- Card Event Handler -------------------*/
static char *rsxx_card_state_to_str(unsigned int state)
static const char * const rsxx_card_state_to_str(unsigned int state)
{
static char *state_strings[] = {
static const char * const state_strings[] = {
"Unknown", "Shutdown", "Starting", "Formatting",
"Uninitialized", "Good", "Shutting Down",
"Fault", "Read Only Fault", "dStroying"

13
drivers/block/rsxx/cregs.c
View file

@ -126,13 +126,6 @@ static void creg_issue_cmd(struct rsxx_cardinfo *card, struct creg_cmd *cmd)
cmd->buf, cmd->stream);
}
/*
* Data copy must complete before initiating the command. This is
* needed for weakly ordered processors (i.e. PowerPC), so that all
* neccessary registers are written before we kick the hardware.
*/
wmb();
/* Setting the valid bit will kick off the command. */
iowrite32(cmd->op, card->regmap + CREG_CMD);
}
@ -399,12 +392,12 @@ static int __issue_creg_rw(struct rsxx_cardinfo *card,
return st;
/*
* This timeout is neccessary for unresponsive hardware. The additional
* This timeout is necessary for unresponsive hardware. The additional
* 20 seconds to used to guarantee that each cregs requests has time to
* complete.
*/
timeout = msecs_to_jiffies((CREG_TIMEOUT_MSEC *
card->creg_ctrl.q_depth) + 20000);
timeout = msecs_to_jiffies(CREG_TIMEOUT_MSEC *
card->creg_ctrl.q_depth + 20000);
/*
* The creg interface is guaranteed to complete. It has a timeout

12
drivers/block/rsxx/dma.c
View file

@ -432,16 +432,6 @@ static void rsxx_issue_dmas(struct work_struct *work)
/* Let HW know we've queued commands. */
if (cmds_pending) {
/*
* We must guarantee that the CPU writes to 'ctrl->cmd.buf'
* (which is in PCI-consistent system-memory) from the loop
* above make it into the coherency domain before the
* following PIO "trigger" updating the cmd.idx. A WMB is
* sufficient. We need not explicitly CPU cache-flush since
* the memory is a PCI-consistent (ie; coherent) mapping.
*/
wmb();
atomic_add(cmds_pending, &ctrl->stats.hw_q_depth);
mod_timer(&ctrl->activity_timer,
jiffies + DMA_ACTIVITY_TIMEOUT);
@ -798,8 +788,6 @@ static int rsxx_dma_ctrl_init(struct pci_dev *dev,
iowrite32(ctrl->cmd.idx, ctrl->regmap + HW_CMD_IDX);
iowrite32(ctrl->cmd.idx, ctrl->regmap + SW_CMD_IDX);
wmb();
return 0;
}

6
drivers/block/rsxx/rsxx.h
View file

@ -27,15 +27,17 @@
/*----------------- IOCTL Definitions -------------------*/
#define RSXX_MAX_DATA 8
struct rsxx_reg_access {
__u32 addr;
__u32 cnt;
__u32 stat;
__u32 stream;
__u32 data[8];
__u32 data[RSXX_MAX_DATA];
};
#define RSXX_MAX_REG_CNT (8 * (sizeof(__u32)))
#define RSXX_MAX_REG_CNT (RSXX_MAX_DATA * (sizeof(__u32)))
#define RSXX_IOC_MAGIC 'r'