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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-07-23 17:55:56 (GMT) |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-07-23 17:55:56 (GMT) |
| commit | 73dc532bc1eebe3bff6b918c5685a219eae27f97 (patch) | |
| tree | c29d45ab4299250d990e0d5c31b72ef6cac12882 | |
| parent | 3b2a5c7149ee4af4aff8fee953f66fc846d92cea (diff) | |
| download | linux-73dc532bc1eebe3bff6b918c5685a219eae27f97.tar.xz | |
gayle: reserve memory resources at once
* Reserve memory resources for all IDE ports at once by moving
request_mem_region() out of 'for ()' loop and always defining
GAYLE_IDEREG_SIZE to 0x2000.
* Keep memory resources even if no free IDE slots can be found
(this driver is unloadable currently).
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| -rw-r--r-- | drivers/ide/legacy/gayle.c | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/drivers/ide/legacy/gayle.c b/drivers/ide/legacy/gayle.c index e45c734..7baeefa 100644 --- a/drivers/ide/legacy/gayle.c +++ b/drivers/ide/legacy/gayle.c @@ -31,6 +31,8 @@ #define GAYLE_BASE_4000 0xdd2020 /* A4000/A4000T */ #define GAYLE_BASE_1200 0xda0000 /* A1200/A600 and E-Matrix 530 */ +#define GAYLE_IDEREG_SIZE 0x2000 + /* * Offsets from one of the above bases */ @@ -56,13 +58,11 @@ #define GAYLE_NUM_HWIFS 1 #define GAYLE_NUM_PROBE_HWIFS GAYLE_NUM_HWIFS #define GAYLE_HAS_CONTROL_REG 1 -#define GAYLE_IDEREG_SIZE 0x2000 #else /* CONFIG_BLK_DEV_IDEDOUBLER */ #define GAYLE_NUM_HWIFS 2 #define GAYLE_NUM_PROBE_HWIFS (ide_doubler ? GAYLE_NUM_HWIFS : \ GAYLE_NUM_HWIFS-1) #define GAYLE_HAS_CONTROL_REG (!ide_doubler) -#define GAYLE_IDEREG_SIZE (ide_doubler ? 0x1000 : 0x2000) static int ide_doubler; module_param_named(doubler, ide_doubler, bool, 0); @@ -124,6 +124,9 @@ static void __init gayle_setup_ports(hw_regs_t *hw, unsigned long base, static int __init gayle_init(void) { + unsigned long phys_base, res_start, res_n; + unsigned long base, ctrlport, irqport; + ide_ack_intr_t *ack_intr; int a4000, i; hw_regs_t hw[GAYLE_NUM_HWIFS], *hws[] = { NULL, NULL, NULL, NULL }; u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; @@ -149,12 +152,6 @@ found: #endif ""); - for (i = 0; i < GAYLE_NUM_PROBE_HWIFS; i++) { - unsigned long base, ctrlport, irqport; - ide_ack_intr_t *ack_intr; - ide_hwif_t *hwif; - unsigned long phys_base, res_start, res_n; - if (a4000) { phys_base = GAYLE_BASE_4000; irqport = (unsigned long)ZTWO_VADDR(GAYLE_IRQ_4000); @@ -168,15 +165,16 @@ found: * FIXME: we now have selectable modes between mmio v/s iomio */ - phys_base += i*GAYLE_NEXT_PORT; - res_start = ((unsigned long)phys_base) & ~(GAYLE_NEXT_PORT-1); res_n = GAYLE_IDEREG_SIZE; if (!request_mem_region(res_start, res_n, "IDE")) - continue; + return -EBUSY; - base = (unsigned long)ZTWO_VADDR(phys_base); + for (i = 0; i < GAYLE_NUM_PROBE_HWIFS; i++) { + ide_hwif_t *hwif; + + base = (unsigned long)ZTWO_VADDR(phys_base + i * GAYLE_NEXT_PORT); ctrlport = GAYLE_HAS_CONTROL_REG ? (base + GAYLE_CONTROL) : 0; gayle_setup_ports(&hw[i], base, ctrlport, irqport, ack_intr); @@ -187,8 +185,7 @@ found: hws[i] = &hw[i]; idx[i] = hwif->index; - } else - release_mem_region(res_start, res_n); + } } ide_device_add(idx, NULL, hws); |