The driver forgets to free the I/O region in remove and probe
failure.
Add the missed calls to fix it.
Signed-off-by: Chuhong Yuan <hsleste...@gmail.com>
---
Changes in v3:
- Revise the commit message.
- Add an error handler to suit the "goto error" before request_region().
- Revise the order of operations in remove.
drivers/video/fbdev/vesafb.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/video/fbdev/vesafb.c b/drivers/video/fbdev/vesafb.c
index a1fe24ea869b..c7bc9ace47d4 100644
--- a/drivers/video/fbdev/vesafb.c
+++ b/drivers/video/fbdev/vesafb.c
@@ -439,7 +439,7 @@ static int vesafb_probe(struct platform_device *dev)
"vesafb: abort, cannot ioremap video memory 0x%x @
0x%lx\n",
vesafb_fix.smem_len, vesafb_fix.smem_start);
err = -EIO;
- goto err;
+ goto err_release_region;
}
printk(KERN_INFO "vesafb: framebuffer at 0x%lx, mapped to 0x%p, "
@@ -458,15 +458,17 @@ static int vesafb_probe(struct platform_device *dev)
if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
err = -ENOMEM;
- goto err;
+ goto err_release_region;
}
if (register_framebuffer(info)<0) {
err = -EINVAL;
fb_dealloc_cmap(&info->cmap);
- goto err;
+ goto err_release_region;
}
fb_info(info, "%s frame buffer device\n", info->fix.id);
return 0;
+err_release_region:
+ release_region(0x3c0, 32);
err:
arch_phys_wc_del(par->wc_cookie);
if (info->screen_base)
@@ -481,6 +483,7 @@ static int vesafb_remove(struct platform_device *pdev)
struct fb_info *info = platform_get_drvdata(pdev);
unregister_framebuffer(info);
+ release_region(0x3c0, 32);
framebuffer_release(info);
return 0;
--
2.25.1
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