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Subject[PATCH 1/7] staging: slicoss: slicoss.c: fix different address space sparse warning
Date
add IOMEM_GET_FIELD32 to get u32 value of a member of a __iomem structure;

Signed-off-by: Peng Sun <sironhide0null@gmail.com>
---
drivers/staging/slicoss/slic.h | 7 +++++++
drivers/staging/slicoss/slicoss.c | 4 ++--
2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/slicoss/slic.h b/drivers/staging/slicoss/slic.h
index fe1d2ce..022e7f6 100644
--- a/drivers/staging/slicoss/slic.h
+++ b/drivers/staging/slicoss/slic.h
@@ -539,6 +539,13 @@ static inline void slic_flush_write(struct adapter *adapter)
ioread32(adapter->regs + SLIC_REG_HOSTID);
}

+#define IOMEM_GET_FIELD32(base, member) \
+({ \
+ char __iomem *_base = (char __iomem *)base; \
+ _base += offsetof(typeof(*base), member); \
+ ioread32(_base); \
+})
+
#define UPDATE_STATS(largestat, newstat, oldstat) \
{ \
if ((newstat) < (oldstat)) \
diff --git a/drivers/staging/slicoss/slicoss.c b/drivers/staging/slicoss/slicoss.c
index 21280a3..929a0d5 100644
--- a/drivers/staging/slicoss/slicoss.c
+++ b/drivers/staging/slicoss/slicoss.c
@@ -924,8 +924,8 @@ err_unlock_irq:
static void slic_link_upr_complete(struct adapter *adapter, u32 isr)
{
struct slic_shmemory *sm = &adapter->shmem;
- struct slic_shmem_data *sm_data = sm->shmem_data;
- u32 lst = sm_data->lnkstatus;
+ struct slic_shmem_data __iomem *sm_data = sm->shmem_data;
+ u32 lst = IOMEM_GET_FIELD32(sm_data, lnkstatus);
uint linkup;
unsigned char linkspeed;
unsigned char linkduplex;
--
2.7.4
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