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| author | Julia Lawall <julia@diku.dk> | 2011-01-02 14:27:42 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2011-01-06 15:46:56 +0900 |
| commit | e045da7d835a28950543f5f10f0cb1905ca9bbaf (patch) | |
| tree | 49b70bb5ec592f2638804943f3c87218340002a5 /drivers/video/carminefb.c | |
| parent | 7ee04fd5d5ff74f81d8eee128bc9346ab87c56b8 (diff) | |
| download | op-kernel-dev-e045da7d835a28950543f5f10f0cb1905ca9bbaf.zip op-kernel-dev-e045da7d835a28950543f5f10f0cb1905ca9bbaf.tar.gz | |
drivers/video/carminefb.c: improve error handling
This code had an error handling goto to the wrong place, a misplaced
release_mem_region, and a duplicated release_mem_region.
The semantic match that finds the double release_mem_region is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r@
expression e1,e2,e3;
position p1,p2,p3;
@@
release_mem_region@p1(e1, e2)@p3;
... when != request_mem_region(e1,e2,e3)
release_mem_region(e1, e2)@p2;
@@
expression e <= r.e1,e3;
expression r.e1,e2;
position r.p1,r.p2,r.p3,p!=r.p1;
@@
*release_mem_region(e1, e2)@p3;
... when != e = e3
*release_mem_region@p(e1, e2)@p2;// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/video/carminefb.c')
| -rw-r--r-- | drivers/video/carminefb.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/video/carminefb.c b/drivers/video/carminefb.c index 6b19136..caaa27d 100644 --- a/drivers/video/carminefb.c +++ b/drivers/video/carminefb.c @@ -654,7 +654,7 @@ static int __devinit carminefb_probe(struct pci_dev *dev, printk(KERN_ERR "carminefb: Memory bar is only %d bytes, %d " "are required.", carminefb_fix.smem_len, CARMINE_TOTAL_DIPLAY_MEM); - goto err_free_reg_mmio; + goto err_unmap_vregs; } if (!request_mem_region(carminefb_fix.smem_start, @@ -667,8 +667,6 @@ static int __devinit carminefb_probe(struct pci_dev *dev, carminefb_fix.smem_len); if (!hw->screen_mem) { printk(KERN_ERR "carmine: Can't ioremap smem area.\n"); - release_mem_region(carminefb_fix.smem_start, - carminefb_fix.smem_len); goto err_reg_smem; } @@ -710,7 +708,7 @@ err_deinit_hw: err_unmap_screen: iounmap(hw->screen_mem); err_reg_smem: - release_mem_region(carminefb_fix.mmio_start, carminefb_fix.mmio_len); + release_mem_region(carminefb_fix.smem_start, carminefb_fix.smem_len); err_unmap_vregs: iounmap(hw->v_regs); err_free_reg_mmio: |
