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Date: Fri, 20 Mar 2015 15:22:11 +0000
From: Lorenzo Stoakes <lstoakes@...il.com>
To: sudipm.mukherjee@...il.com, teddy.wang@...iconmotion.com,
gregkh@...uxfoundation.org
Cc: linux-fbdev@...r.kernel.org, devel@...verdev.osuosl.org,
linux-kernel@...r.kernel.org, Lorenzo Stoakes <lstoakes@...il.com>
Subject: [PATCH RESEND 2 1/5] staging: sm750fb: Use memset_io instead of memset
This patch takes into account that cursor->vstart, crtc->vScreen and
share->pvMem are pointers to memory-mapped I/O and thus we should use memset_io
to make this explicit. In addition, some architectures require special treatment
of memory-mapped I/O so the previous code could actually break without this
change.
This fixes the following sparse warnings:-
drivers/staging/sm750fb/sm750.c:489:17: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/sm750fb/sm750.c:490:17: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/sm750fb/sm750.c:501:17: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/sm750fb/sm750.c:502:17: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/sm750fb/sm750.c:833:5: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/sm750fb/sm750.c:1154:9: warning: incorrect type in argument 1 (different address spaces)
Signed-off-by: Lorenzo Stoakes <lstoakes@...il.com>
---
drivers/staging/sm750fb/sm750.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/sm750fb/sm750.c b/drivers/staging/sm750fb/sm750.c
index aa0888c..3e36b6a 100644
--- a/drivers/staging/sm750fb/sm750.c
+++ b/drivers/staging/sm750fb/sm750.c
@@ -486,8 +486,8 @@ static int lynxfb_resume(struct pci_dev* pdev)
par = info->par;
crtc = &par->crtc;
cursor = &crtc->cursor;
- memset(cursor->vstart, 0x0, cursor->size);
- memset(crtc->vScreen,0x0,crtc->vidmem_size);
+ memset_io(cursor->vstart, 0x0, cursor->size);
+ memset_io(crtc->vScreen, 0x0, crtc->vidmem_size);
lynxfb_ops_set_par(info);
fb_set_suspend(info, 0);
}
@@ -498,8 +498,8 @@ static int lynxfb_resume(struct pci_dev* pdev)
par = info->par;
crtc = &par->crtc;
cursor = &crtc->cursor;
- memset(cursor->vstart, 0x0, cursor->size);
- memset(crtc->vScreen,0x0,crtc->vidmem_size);
+ memset_io(cursor->vstart, 0x0, cursor->size);
+ memset_io(crtc->vScreen, 0x0, crtc->vidmem_size);
lynxfb_ops_set_par(info);
fb_set_suspend(info, 0);
}
@@ -830,7 +830,7 @@ static int lynxfb_set_fbinfo(struct fb_info* info,int index)
crtc->cursor.share = share;
- memset(crtc->cursor.vstart, 0, crtc->cursor.size);
+ memset_io(crtc->cursor.vstart, 0, crtc->cursor.size);
if(!g_hwcursor){
lynxfb_ops.fb_cursor = NULL;
crtc->cursor.disable(&crtc->cursor);
@@ -1151,7 +1151,7 @@ static int lynxfb_pci_probe(struct pci_dev * pdev,
}
#endif
- memset(share->pvMem,0,share->vidmem_size);
+ memset_io(share->pvMem, 0, share->vidmem_size);
pr_info("sm%3x mmio address = %p\n",share->devid,share->pvReg);
--
2.3.2
--
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