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scsi: mpt3sas: Fix for regression caused by sparse cleanups 

Commit cf6bf9710c ("scsi: mpt3sas: Bug fix for big endian systems") was
merged to address sparse warnings. However, the patch introduced a
regression on big endian since the code accidentally mixed I/O memory
accessors, which do endian swaps, and regular CPU loads and stores.

Do a partial revert of the offending commit.

[mkp: replaced commit message]

Signed-off-by: Chaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Chaitra P B 2018-06-29 10:58:10 -04:00 committed by Martin K. Petersen
parent cb12ba356c
commit b15c9fd8bb
1 changed files with 6 additions and 6 deletions
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12
drivers/scsi/mpt3sas/mpt3sas_base.c
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@ -3321,7 +3321,7 @@ _base_mpi_ep_writeq(__u64 b, volatile void __iomem *addr,
spinlock_t *writeq_lock)
{
unsigned long flags;
__u64 data_out = b;
__u64 data_out = cpu_to_le64(b);
spin_lock_irqsave(writeq_lock, flags);
writel((u32)(data_out), addr);
@ -3344,7 +3344,7 @@ _base_mpi_ep_writeq(__u64 b, volatile void __iomem *addr,
static inline void
_base_writeq(__u64 b, volatile void __iomem *addr, spinlock_t *writeq_lock)
{
writeq(b, addr);
writeq(cpu_to_le64(b), addr);
}
#else
static inline void
@ -5215,7 +5215,7 @@ _base_handshake_req_reply_wait(struct MPT3SAS_ADAPTER *ioc, int request_bytes,
/* send message 32-bits at a time */
for (i = 0, failed = 0; i < request_bytes/4 && !failed; i++) {
writel((u32)(request[i]), &ioc->chip->Doorbell);
writel(cpu_to_le32(request[i]), &ioc->chip->Doorbell);
if ((_base_wait_for_doorbell_ack(ioc, 5)))
failed = 1;
}
@ -5236,7 +5236,7 @@ _base_handshake_req_reply_wait(struct MPT3SAS_ADAPTER *ioc, int request_bytes,
}
/* read the first two 16-bits, it gives the total length of the reply */
reply[0] = (u16)(readl(&ioc->chip->Doorbell)
reply[0] = le16_to_cpu(readl(&ioc->chip->Doorbell)
& MPI2_DOORBELL_DATA_MASK);
writel(0, &ioc->chip->HostInterruptStatus);
if ((_base_wait_for_doorbell_int(ioc, 5))) {
@ -5245,7 +5245,7 @@ _base_handshake_req_reply_wait(struct MPT3SAS_ADAPTER *ioc, int request_bytes,
ioc->name, __LINE__);
return -EFAULT;
}
reply[1] = (u16)(readl(&ioc->chip->Doorbell)
reply[1] = le16_to_cpu(readl(&ioc->chip->Doorbell)
& MPI2_DOORBELL_DATA_MASK);
writel(0, &ioc->chip->HostInterruptStatus);
@ -5259,7 +5259,7 @@ _base_handshake_req_reply_wait(struct MPT3SAS_ADAPTER *ioc, int request_bytes,
if (i >= reply_bytes/2) /* overflow case */
readl(&ioc->chip->Doorbell);
else
reply[i] = (u16)(readl(&ioc->chip->Doorbell)
reply[i] = le16_to_cpu(readl(&ioc->chip->Doorbell)
& MPI2_DOORBELL_DATA_MASK);
writel(0, &ioc->chip->HostInterruptStatus);
}