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Diffstat (limited to 'drivers/video/hgafb.c')
-rw-r--r--drivers/video/hgafb.c26
1 files changed, 15 insertions, 11 deletions
diff --git a/drivers/video/hgafb.c b/drivers/video/hgafb.c
index fb9e672..c18880d 100644
--- a/drivers/video/hgafb.c
+++ b/drivers/video/hgafb.c
@@ -279,7 +279,7 @@ static void hga_blank(int blank_mode)
static int __init hga_card_detect(void)
{
- int count=0;
+ int count = 0;
void __iomem *p, *q;
unsigned short p_save, q_save;
@@ -303,20 +303,18 @@ static int __init hga_card_detect(void)
writew(0x55aa, p); if (readw(p) == 0x55aa) count++;
writew(p_save, p);
- if (count != 2) {
- return 0;
- }
+ if (count != 2)
+ goto error;
/* Ok, there is definitely a card registering at the correct
* memory location, so now we do an I/O port test.
*/
- if (!test_hga_b(0x66, 0x0f)) { /* cursor low register */
- return 0;
- }
- if (!test_hga_b(0x99, 0x0f)) { /* cursor low register */
- return 0;
- }
+ if (!test_hga_b(0x66, 0x0f)) /* cursor low register */
+ goto error;
+
+ if (!test_hga_b(0x99, 0x0f)) /* cursor low register */
+ goto error;
/* See if the card is a Hercules, by checking whether the vsync
* bit of the status register is changing. This test lasts for
@@ -331,7 +329,7 @@ static int __init hga_card_detect(void)
}
if (p_save == q_save)
- return 0;
+ goto error;
switch (inb_p(HGA_STATUS_PORT) & 0x70) {
case 0x10:
@@ -348,6 +346,12 @@ static int __init hga_card_detect(void)
break;
}
return 1;
+error:
+ if (release_io_ports)
+ release_region(0x3b0, 12);
+ if (release_io_port)
+ release_region(0x3bf, 1);
+ return 0;
}
/**
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