[PATCH] staging: slicoss: fix different address space warnings

From: Sergio Paracuellos
Date: Tue Nov 15 2016 - 12:19:03 EST

This patch fix the following sparse warnings in slicoss driver:
warning: incorrect type in assignment (different address spaces)

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@xxxxxxxxx>
---
drivers/staging/slicoss/slic.h | 7 ++++
drivers/staging/slicoss/slicoss.c | 83 ++++++++++++++++++++++-----------------
2 files changed, 55 insertions(+), 35 deletions(-)

diff --git a/drivers/staging/slicoss/slic.h b/drivers/staging/slicoss/slic.h
index 420546d..f76c0cd 100644
--- a/drivers/staging/slicoss/slic.h
+++ b/drivers/staging/slicoss/slic.h
@@ -540,6 +540,13 @@ static inline void slic_flush_write(struct adapter *adapter)
ioread32(adapter->regs + SLIC_REG_HOSTID);
}

+#define IOMEM_GET_FIELDADDR(base, member) \
+({ \
+ char __iomem *_base = (char __iomem *)base; \
+ _base += offsetof(typeof(*base), member); \
+ (void __iomem *)_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 d2929b9..0e1bf5d 100644
--- a/drivers/staging/slicoss/slicoss.c
+++ b/drivers/staging/slicoss/slicoss.c
@@ -923,8 +923,8 @@ static int slic_upr_request(struct adapter *adapter,
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 = ioread32(&sm_data->lnkstatus);
uint linkup;
unsigned char linkspeed;
unsigned char linkduplex;
@@ -1003,8 +1003,9 @@ static void slic_upr_request_complete(struct adapter *adapter, u32 isr)
switch (upr->upr_request) {
case SLIC_UPR_STATS: {
struct slic_shmemory *sm = &adapter->shmem;
- struct slic_shmem_data *sm_data = sm->shmem_data;
- struct slic_stats *stats = &sm_data->stats;
+ struct slic_shmem_data __iomem *sm_data = sm->shmem_data;
+ struct slic_stats __iomem *stats = IOMEM_GET_FIELDADDR(sm_data,
+ stats);
struct slic_stats *old = &adapter->inicstats_prev;
struct slicnet_stats *stst = &adapter->slic_stats;

@@ -1014,50 +1015,62 @@ static void slic_upr_request_complete(struct adapter *adapter, u32 isr)
break;
}

- UPDATE_STATS_GB(stst->tcp.xmit_tcp_segs, stats->xmit_tcp_segs,
+ UPDATE_STATS_GB(stst->tcp.xmit_tcp_segs,
+ ioread64(&stats->xmit_tcp_segs),
old->xmit_tcp_segs);

- UPDATE_STATS_GB(stst->tcp.xmit_tcp_bytes, stats->xmit_tcp_bytes,
+ UPDATE_STATS_GB(stst->tcp.xmit_tcp_bytes,
+ ioread64(&stats->xmit_tcp_bytes),
old->xmit_tcp_bytes);

- UPDATE_STATS_GB(stst->tcp.rcv_tcp_segs, stats->rcv_tcp_segs,
+ UPDATE_STATS_GB(stst->tcp.rcv_tcp_segs,
+ ioread64(&stats->rcv_tcp_segs),
old->rcv_tcp_segs);

- UPDATE_STATS_GB(stst->tcp.rcv_tcp_bytes, stats->rcv_tcp_bytes,
+ UPDATE_STATS_GB(stst->tcp.rcv_tcp_bytes,
+ ioread64(&stats->rcv_tcp_bytes),
old->rcv_tcp_bytes);

- UPDATE_STATS_GB(stst->iface.xmt_bytes, stats->xmit_bytes,
+ UPDATE_STATS_GB(stst->iface.xmt_bytes,
+ ioread64(&stats->xmit_bytes),
old->xmit_bytes);

- UPDATE_STATS_GB(stst->iface.xmt_ucast, stats->xmit_unicasts,
+ UPDATE_STATS_GB(stst->iface.xmt_ucast,
+ ioread64(&stats->xmit_unicasts),
old->xmit_unicasts);

- UPDATE_STATS_GB(stst->iface.rcv_bytes, stats->rcv_bytes,
+ UPDATE_STATS_GB(stst->iface.rcv_bytes,
+ ioread64(&stats->rcv_bytes),
old->rcv_bytes);

- UPDATE_STATS_GB(stst->iface.rcv_ucast, stats->rcv_unicasts,
+ UPDATE_STATS_GB(stst->iface.rcv_ucast,
+ ioread64(&stats->rcv_unicasts),
old->rcv_unicasts);

- UPDATE_STATS_GB(stst->iface.xmt_errors, stats->xmit_collisions,
+ UPDATE_STATS_GB(stst->iface.xmt_errors,
+ ioread64(&stats->xmit_collisions),
old->xmit_collisions);

UPDATE_STATS_GB(stst->iface.xmt_errors,
- stats->xmit_excess_collisions,
+ ioread64(&stats->xmit_excess_collisions),
old->xmit_excess_collisions);

- UPDATE_STATS_GB(stst->iface.xmt_errors, stats->xmit_other_error,
+ UPDATE_STATS_GB(stst->iface.xmt_errors,
+ ioread64(&stats->xmit_other_error),
old->xmit_other_error);

- UPDATE_STATS_GB(stst->iface.rcv_errors, stats->rcv_other_error,
+ UPDATE_STATS_GB(stst->iface.rcv_errors,
+ ioread64(&stats->rcv_other_error),
old->rcv_other_error);

- UPDATE_STATS_GB(stst->iface.rcv_discards, stats->rcv_drops,
+ UPDATE_STATS_GB(stst->iface.rcv_discards,
+ ioread64(&stats->rcv_drops),
old->rcv_drops);

- if (stats->rcv_drops > old->rcv_drops)
- adapter->rcv_drops += (stats->rcv_drops -
+ if (ioread64(&stats->rcv_drops) > old->rcv_drops)
+ adapter->rcv_drops += (ioread64(&stats->rcv_drops) -
old->rcv_drops);
- memcpy(old, stats, sizeof(*stats));
+ memcpy_fromio(old, stats, sizeof(*stats));
break;
}
case SLIC_UPR_RLSR:
@@ -1679,10 +1692,10 @@ static void slic_init_cleanup(struct adapter *adapter)

if (adapter->shmem.shmem_data) {
struct slic_shmemory *sm = &adapter->shmem;
- struct slic_shmem_data *sm_data = sm->shmem_data;
+ struct slic_shmem_data __iomem *sm_data = sm->shmem_data;

- pci_free_consistent(adapter->pcidev, sizeof(*sm_data), sm_data,
- sm->isr_phaddr);
+ pci_free_consistent(adapter->pcidev, sizeof(*sm_data),
+ (void __force *)sm_data, sm->isr_phaddr);
}

if (adapter->pingtimerset) {
@@ -2068,15 +2081,15 @@ static irqreturn_t slic_interrupt(int irq, void *dev_id)
struct net_device *dev = dev_id;
struct adapter *adapter = netdev_priv(dev);
struct slic_shmemory *sm = &adapter->shmem;
- struct slic_shmem_data *sm_data = sm->shmem_data;
+ struct slic_shmem_data __iomem *sm_data = sm->shmem_data;
u32 isr;

- if (sm_data->isr) {
+ if (ioread32(&sm_data->isr)) {
slic_write32(adapter, SLIC_REG_ICR, ICR_INT_MASK);
slic_flush_write(adapter);

- isr = sm_data->isr;
- sm_data->isr = 0;
+ isr = ioread32(&sm_data->isr);
+ iowrite32(0, &sm_data->isr);
adapter->num_isrs++;
switch (adapter->card->state) {
case CARD_UP:
@@ -2211,7 +2224,7 @@ static int slic_if_init(struct adapter *adapter, unsigned long *flags)
struct sliccard *card = adapter->card;
struct net_device *dev = adapter->netdev;
struct slic_shmemory *sm = &adapter->shmem;
- struct slic_shmem_data *sm_data = sm->shmem_data;
+ struct slic_shmem_data __iomem *sm_data = sm->shmem_data;
int rc;

/* adapter should be down at this point */
@@ -2295,7 +2308,7 @@ static int slic_if_init(struct adapter *adapter, unsigned long *flags)
/*
* clear any pending events, then enable interrupts
*/
- sm_data->isr = 0;
+ iowrite32(0, &sm_data->isr);
slic_write32(adapter, SLIC_REG_ISR, 0);
slic_write32(adapter, SLIC_REG_ICR, ICR_INT_ON);

@@ -2584,7 +2597,7 @@ static void slic_config_pci(struct pci_dev *pcidev)
static int slic_card_init(struct sliccard *card, struct adapter *adapter)
{
struct slic_shmemory *sm = &adapter->shmem;
- struct slic_shmem_data *sm_data = sm->shmem_data;
+ struct slic_shmem_data __iomem *sm_data = sm->shmem_data;
struct slic_eeprom *peeprom;
struct oslic_eeprom *pOeeprom;
dma_addr_t phys_config;
@@ -2647,9 +2660,9 @@ static int slic_card_init(struct sliccard *card, struct adapter *adapter)
}

for (;;) {
- if (sm_data->isr) {
- if (sm_data->isr & ISR_UPC) {
- sm_data->isr = 0;
+ if (ioread32(&sm_data->isr)) {
+ if (ioread32(&sm_data->isr) & ISR_UPC) {
+ iowrite32(0, &sm_data->isr);
slic_write64(adapter, SLIC_REG_ISP, 0,
0);
slic_write32(adapter, SLIC_REG_ISR, 0);
@@ -2659,7 +2672,7 @@ static int slic_card_init(struct sliccard *card, struct adapter *adapter)
break;
}

- sm_data->isr = 0;
+ iowrite32(0, &sm_data->isr);
slic_write32(adapter, SLIC_REG_ISR, 0);
slic_flush_write(adapter);
} else {
@@ -2862,7 +2875,7 @@ static int slic_init_adapter(struct net_device *netdev,
if (!sm_data)
return -ENOMEM;

- sm->shmem_data = sm_data;
+ sm->shmem_data = (struct slic_shmem_data __force __iomem *)sm_data;
sm->isr_phaddr = phaddr;
sm->lnkstatus_phaddr = phaddr + offsetof(struct slic_shmem_data,
lnkstatus);
--
1.9.1