Messages in this thread Patch in this message | | | From | Peng Sun <> | Subject | [PATCH 1/7] staging: slicoss: slicoss.c: fix different address space sparse warning | Date | Fri, 16 Sep 2016 19:05:46 -0700 |
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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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