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vgaarb: fix "target=default" passing

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Commit 77c1ff3982 fixed the userspace
pointer dereference, but introduced another bug pointed out by Eugene Teo
in RH bug #564264. Instead of comparing the point we were at in the string,
we instead compared the beginning of the string to "default".

Signed-off-by: Eugene Teo <eugeneteo@kernel.sg>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Eugene Teo
2010-03-23 10:52:13 +08:00
committed by Greg Kroah-Hartman
parent 35ef2e922b
commit 7a3a3bba93
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/vga/vgaarb.c
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@@ -961,7 +961,7 @@ static ssize_t vga_arb_write(struct file *file, const char __user * buf,
remaining -= 7;
pr_devel("client 0x%p called 'target'\n", priv);
/* if target is default */
if (!strncmp(buf, "default", 7))
if (!strncmp(curr_pos, "default", 7))
pdev = pci_dev_get(vga_default_device());
else {
if (!vga_pci_str_to_vars(curr_pos, remaining,