x86:sysfb_efi:efifb_set_system: fix miss valid address range in later BARs
PATCH 1/1 x86:sysfb_efi:efifb_set_system: fix miss valid address range in later BARs
We can't just break out when meet start is equal to zero, this will cause we miss valid address range in later BARs.
On the other hand, it isn't enough to test start only for below situation:
0(start) <= lfb_base < end
Signed-off-by Wang YanQing <[email protected]>
--- arch/x86/kernel/sysfb_efi.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)
arch/x86/kernel/sysfb_efi.c +11 -2
@@ -106,10 +106,19 @@ static int __init efifb_set_system(const struct dmi_system_id *id)continue ;for (i =0 ; i <DEVICE_COUNT_RESOURCE ; i++) {resource_size_t start, end; +unsigned long flags; + + flags =pci_resource_flags (dev, i); +if (!(flags &IORESOURCE_MEM )) +continue ; + +if (flags &IORESOURCE_UNSET ) +continue ; + +if (pci_resource_len (dev, i) ==0 ) +continue ; start =pci_resource_start (dev, i); -if (start ==0 ) -break ; end =pci_resource_end (dev, i);if (screen_info.lfb_base >= start && screen_info.lfb_base < end) {
Signature · 1 line
1.8.5.6.2.g3d8a54e.dirty