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author | Paul Mackerras <paulus@samba.org> | 2008-06-30 10:16:50 +1000 |
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committer | Paul Mackerras <paulus@samba.org> | 2008-06-30 10:16:50 +1000 |
commit | e9a4b6a3f6592862a67837e80aad3f50468857a6 (patch) | |
tree | 087420cf91ac922c7e99757c4490a605ec7b10f2 /drivers/video/hgafb.c | |
parent | 441dbb500b4344a8e3125e5aabab4f9dbf72514f (diff) | |
parent | 1702b52092e9a6d05398d3f9581ddc050ef00d06 (diff) | |
download | linux-e9a4b6a3f6592862a67837e80aad3f50468857a6.tar.gz linux-e9a4b6a3f6592862a67837e80aad3f50468857a6.tar.bz2 linux-e9a4b6a3f6592862a67837e80aad3f50468857a6.zip |
Merge branch 'linux-2.6'
Diffstat (limited to 'drivers/video/hgafb.c')
-rw-r--r-- | drivers/video/hgafb.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/drivers/video/hgafb.c b/drivers/video/hgafb.c index fb9e67228543..c18880d9db1f 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; } /** |