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Message-ID: <1398857906.6930.59.camel@localhost>
Date: Wed, 30 Apr 2014 19:38:26 +0800
From: ching <ching2048@...ca.com.tw>
To: jbottomley@...allels.com, dan.carpenter@...cle.com,
thenzl@...hat.com, linux-scsi@...r.kernel.org,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH v1.0 14/16] arcmsr: fix sparse checking error
From: Ching<ching2048@...ca.com.tw>
Fix sparse utility checking errors.
Signed-off-by: Ching<ching2048@...ca.com.tw>
---
diff -uprN a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
--- a/drivers/scsi/arcmsr/arcmsr_hba.c 2014-04-30 15:22:22.000000000 +0800
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c 2014-04-30 15:22:26.000000000 +0800
@@ -78,7 +78,7 @@ MODULE_VERSION(ARCMSR_DRIVER_VERSION);
#define ARCMSR_SLEEPTIME 10
#define ARCMSR_RETRYCOUNT 12
-wait_queue_head_t wait_q;
+static wait_queue_head_t wait_q;
static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
struct scsi_cmnd *cmd);
static int arcmsr_iop_confirm(struct AdapterControlBlock *acb);
@@ -371,7 +371,7 @@ static uint8_t arcmsr_hbaB_wait_msgint_r
static uint8_t arcmsr_hbaC_wait_msgint_ready(struct AdapterControlBlock *pACB)
{
- struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
+ struct MessageUnit_C __iomem *phbcmu = pACB->pmuC;
int i;
for (i = 0; i < 2000; i++) {
@@ -421,7 +421,7 @@ static void arcmsr_hbaB_flush_cache(stru
static void arcmsr_hbaC_flush_cache(struct AdapterControlBlock *pACB)
{
- struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
+ struct MessageUnit_C __iomem *reg = pACB->pmuC;
int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */
writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, ®->inbound_msgaddr0);
writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, ®->inbound_doorbell);
@@ -873,7 +873,7 @@ static uint8_t arcmsr_hbaB_abort_allcmd(
}
static uint8_t arcmsr_hbaC_abort_allcmd(struct AdapterControlBlock *pACB)
{
- struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
+ struct MessageUnit_C __iomem *reg = pACB->pmuC;
writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, ®->inbound_msgaddr0);
writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, ®->inbound_doorbell);
if (!arcmsr_hbaC_wait_msgint_ready(pACB)) {
@@ -961,7 +961,7 @@ static u32 arcmsr_disable_outbound_ints(
}
break;
case ACB_ADAPTER_TYPE_C:{
- struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
+ struct MessageUnit_C __iomem *reg = acb->pmuC;
/* disable all outbound interrupt */
orig_mask = readl(®->host_int_mask); /* disable outbound message0 int */
writel(orig_mask|ARCMSR_HBCMU_ALL_INTMASKENABLE, ®->host_int_mask);
@@ -1085,8 +1085,9 @@ static void arcmsr_done4abort_postqueue(
/*clear all outbound posted Q*/
writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell); /* clear doorbell interrupt */
for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
- if ((flag_ccb = readl(®->done_qbuffer[i])) != 0) {
- writel(0, ®->done_qbuffer[i]);
+ flag_ccb = reg->done_qbuffer[i];
+ if (flag_ccb != 0) {
+ reg->done_qbuffer[i] = 0;
pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
@@ -1099,7 +1100,7 @@ static void arcmsr_done4abort_postqueue(
}
break;
case ACB_ADAPTER_TYPE_C: {
- struct MessageUnit_C *reg = acb->pmuC;
+ struct MessageUnit_C __iomem *reg = acb->pmuC;
struct ARCMSR_CDB *pARCMSR_CDB;
uint32_t flag_ccb, ccb_cdb_phy;
bool error;
@@ -1232,7 +1233,7 @@ static void arcmsr_enable_outbound_ints(
}
break;
case ACB_ADAPTER_TYPE_C: {
- struct MessageUnit_C *reg = acb->pmuC;
+ struct MessageUnit_C __iomem *reg = acb->pmuC;
mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK|ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
writel(intmask_org & mask, ®->host_int_mask);
acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
@@ -1319,12 +1320,12 @@ static void arcmsr_post_ccb(struct Adapt
uint32_t ending_index, index = reg->postq_index;
ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
- writel(0, ®->post_qbuffer[ending_index]);
+ reg->post_qbuffer[ending_index] = 0;
if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
- writel(cdb_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
- ®->post_qbuffer[index]);
+ reg->post_qbuffer[index] =
+ cdb_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE;
} else {
- writel(cdb_phyaddr, ®->post_qbuffer[index]);
+ reg->post_qbuffer[index] = cdb_phyaddr;
}
index++;
index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
@@ -1333,7 +1334,7 @@ static void arcmsr_post_ccb(struct Adapt
}
break;
case ACB_ADAPTER_TYPE_C: {
- struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
+ struct MessageUnit_C __iomem *phbcmu = acb->pmuC;
uint32_t ccb_post_stamp, arc_cdb_size;
arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
@@ -1375,7 +1376,7 @@ static void arcmsr_hbaB_stop_bgrb(struct
static void arcmsr_hbaC_stop_bgrb(struct AdapterControlBlock *pACB)
{
- struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
+ struct MessageUnit_C __iomem *reg = pACB->pmuC;
pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, ®->inbound_msgaddr0);
writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, ®->inbound_doorbell);
@@ -1409,7 +1410,7 @@ static void arcmsr_free_ccb_pool(struct
dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
}
-void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
+static void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
{
switch (acb->adapter_type) {
case ACB_ADAPTER_TYPE_A: {
@@ -1481,7 +1482,7 @@ struct QBUFFER __iomem *arcmsr_get_iop_r
}
break;
case ACB_ADAPTER_TYPE_C: {
- struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)acb->pmuC;
+ struct MessageUnit_C __iomem *phbcmu = acb->pmuC;
qbuffer = (struct QBUFFER __iomem *)&phbcmu->message_rbuffer;
}
}
@@ -1505,7 +1506,7 @@ static struct QBUFFER __iomem *arcmsr_ge
}
break;
case ACB_ADAPTER_TYPE_C: {
- struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
+ struct MessageUnit_C __iomem *reg = acb->pmuC;
pqbuffer = (struct QBUFFER __iomem *)®->message_wbuffer;
}
@@ -1701,7 +1702,7 @@ static void arcmsr_hbaA_doorbell_isr(str
static void arcmsr_hbaC_doorbell_isr(struct AdapterControlBlock *pACB)
{
uint32_t outbound_doorbell;
- struct MessageUnit_C *reg = (struct MessageUnit_C *)pACB->pmuC;
+ struct MessageUnit_C __iomem *reg = pACB->pmuC;
/*
*******************************************************************
** Maybe here we need to check wrqbuffer_lock is lock or not
@@ -1747,8 +1748,8 @@ static void arcmsr_hbaB_postqueue_isr(st
struct CommandControlBlock *pCCB;
bool error;
index = reg->doneq_index;
- while ((flag_ccb = readl(®->done_qbuffer[index])) != 0) {
- writel(0, ®->done_qbuffer[index]);
+ while ((flag_ccb = reg->done_qbuffer[index]) != 0) {
+ reg->done_qbuffer[index] = 0;
pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset+(flag_ccb << 5));/*frame must be 32 bytes aligned*/
pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
@@ -1761,13 +1762,13 @@ static void arcmsr_hbaB_postqueue_isr(st
static void arcmsr_hbaC_postqueue_isr(struct AdapterControlBlock *acb)
{
- struct MessageUnit_C *phbcmu;
+ struct MessageUnit_C __iomem *phbcmu;
struct ARCMSR_CDB *arcmsr_cdb;
struct CommandControlBlock *ccb;
uint32_t flag_ccb, ccb_cdb_phy, throttling = 0;
int error;
- phbcmu = (struct MessageUnit_C *)acb->pmuC;
+ phbcmu = acb->pmuC;
/* areca cdb command done */
/* Use correct offset and size for syncing */
@@ -1799,7 +1800,7 @@ static void arcmsr_hbaC_postqueue_isr(st
*/
static void arcmsr_hbaA_message_isr(struct AdapterControlBlock *acb)
{
- struct MessageUnit_A *reg = acb->pmuA;
+ struct MessageUnit_A __iomem *reg = acb->pmuA;
/*clear interrupt and message state*/
writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, ®->outbound_intstatus);
schedule_work(&acb->arcmsr_do_message_isr_bh);
@@ -1823,7 +1824,7 @@ static void arcmsr_hbaB_message_isr(stru
*/
static void arcmsr_hbaC_message_isr(struct AdapterControlBlock *acb)
{
- struct MessageUnit_C *reg = acb->pmuC;
+ struct MessageUnit_C __iomem *reg = acb->pmuC;
/*clear interrupt and message state*/
writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, ®->outbound_doorbell_clear);
schedule_work(&acb->arcmsr_do_message_isr_bh);
@@ -1884,7 +1885,7 @@ static int arcmsr_hbaB_handle_isr(struct
static int arcmsr_hbaC_handle_isr(struct AdapterControlBlock *pACB)
{
uint32_t host_interrupt_status;
- struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
+ struct MessageUnit_C __iomem *phbcmu = pACB->pmuC;
/*
*********************************************
** check outbound intstatus
@@ -2290,7 +2291,7 @@ static struct CommandControlBlock *arcms
list_del_init(&ccb->list);
}else{
spin_unlock_irqrestore(&acb->ccblist_lock, flags);
- return 0;
+ return NULL;
}
spin_unlock_irqrestore(&acb->ccblist_lock, flags);
return ccb;
@@ -2527,11 +2528,11 @@ static bool arcmsr_hbaB_get_config(struc
static bool arcmsr_hbaC_get_config(struct AdapterControlBlock *pACB)
{
uint32_t intmask_org, Index, firmware_state = 0;
- struct MessageUnit_C *reg = pACB->pmuC;
+ struct MessageUnit_C __iomem *reg = pACB->pmuC;
char *acb_firm_model = pACB->firm_model;
char *acb_firm_version = pACB->firm_version;
- char *iop_firm_model = (char *)(®->msgcode_rwbuffer[15]); /*firm_model,15,60-67*/
- char *iop_firm_version = (char *)(®->msgcode_rwbuffer[17]); /*firm_version,17,68-83*/
+ char __iomem *iop_firm_model = (char __iomem *)(®->msgcode_rwbuffer[15]); /*firm_model,15,60-67*/
+ char __iomem *iop_firm_version = (char __iomem *)(®->msgcode_rwbuffer[17]); /*firm_version,17,68-83*/
int count;
/* disable all outbound interrupt */
intmask_org = readl(®->host_int_mask); /* disable outbound message0 int */
@@ -2678,7 +2679,8 @@ static int arcmsr_hbaB_polling_ccbdone(s
writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
while(1){
index = reg->doneq_index;
- if ((flag_ccb = readl(®->done_qbuffer[index])) == 0) {
+ flag_ccb = reg->done_qbuffer[index];
+ if (flag_ccb == 0) {
if (poll_ccb_done){
rtn = SUCCESS;
break;
@@ -2691,7 +2693,7 @@ static int arcmsr_hbaB_polling_ccbdone(s
goto polling_hbb_ccb_retry;
}
}
- writel(0, ®->done_qbuffer[index]);
+ reg->done_qbuffer[index] = 0;
index++;
/*if last index number set it to 0 */
index %= ARCMSR_MAX_HBB_POSTQUEUE;
@@ -2728,7 +2730,7 @@ static int arcmsr_hbaB_polling_ccbdone(s
static int arcmsr_hbaC_polling_ccbdone(struct AdapterControlBlock *acb, struct CommandControlBlock *poll_ccb)
{
- struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
+ struct MessageUnit_C __iomem *reg = acb->pmuC;
uint32_t flag_ccb, ccb_cdb_phy;
struct ARCMSR_CDB *arcmsr_cdb;
bool error;
@@ -2891,7 +2893,7 @@ static int arcmsr_iop_confirm(struct Ada
break;
case ACB_ADAPTER_TYPE_C: {
if (cdb_phyaddr_hi32 != 0) {
- struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
+ struct MessageUnit_C __iomem *reg = acb->pmuC;
printk(KERN_NOTICE "arcmsr%d: cdb_phyaddr_hi32=0x%x\n",
acb->adapter_index, cdb_phyaddr_hi32);
@@ -2932,7 +2934,7 @@ static void arcmsr_wait_firmware_ready(s
}
break;
case ACB_ADAPTER_TYPE_C: {
- struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
+ struct MessageUnit_C __iomem *reg = acb->pmuC;
do {
firmware_state = readl(®->outbound_msgaddr1);
} while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
@@ -2964,7 +2966,7 @@ static void arcmsr_hbaA_request_device_m
static void arcmsr_hbaB_request_device_map(struct AdapterControlBlock *acb)
{
- struct MessageUnit_B __iomem *reg = acb->pmuB;
+ struct MessageUnit_B *reg = acb->pmuB;
if (unlikely(atomic_read(&acb->rq_map_token) == 0) || ((acb->acb_flags & ACB_F_BUS_RESET) != 0 ) || ((acb->acb_flags & ACB_F_ABORT) != 0 )){
mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
return;
@@ -3049,7 +3051,7 @@ static void arcmsr_hbaB_start_bgrb(struc
static void arcmsr_hbaC_start_bgrb(struct AdapterControlBlock *pACB)
{
- struct MessageUnit_C *phbcmu = (struct MessageUnit_C *)pACB->pmuC;
+ struct MessageUnit_C __iomem *phbcmu = pACB->pmuC;
pACB->acb_flags |= ACB_F_MSG_START_BGRB;
writel(ARCMSR_INBOUND_MESG0_START_BGRB, &phbcmu->inbound_msgaddr0);
writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &phbcmu->inbound_doorbell);
@@ -3096,7 +3098,7 @@ static void arcmsr_clear_doorbell_queue_
}
break;
case ACB_ADAPTER_TYPE_C: {
- struct MessageUnit_C *reg = (struct MessageUnit_C *)acb->pmuC;
+ struct MessageUnit_C __iomem *reg = acb->pmuC;
uint32_t outbound_doorbell, i;
/* empty doorbell Qbuffer if door bell ringed */
outbound_doorbell = readl(®->outbound_doorbell);
--
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