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bcma: don't hardcode SPROM length

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Pass it as an argument to all functions. This is requires as newer SPROM
revisions have different lengths.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rafał Miłecki 2013-05-13 22:07:51 +02:00 committed by John W. Linville
parent 224c9c2366
commit 5179ed7c1b
1 changed files with 15 additions and 15 deletions
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30
drivers/bcma/sprom.c
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@ -72,12 +72,12 @@ fail:
* R/W ops.
**************************************************/
static void bcma_sprom_read(struct bcma_bus *bus, u16 offset, u16 *sprom)
static void bcma_sprom_read(struct bcma_bus *bus, u16 offset, u16 *sprom,
size_t words)
{
int i;
for (i = 0; i < SSB_SPROMSIZE_WORDS_R4; i++)
sprom[i] = bcma_read16(bus->drv_cc.core,
offset + (i * 2));
for (i = 0; i < words; i++)
sprom[i] = bcma_read16(bus->drv_cc.core, offset + (i * 2));
}
/**************************************************
@ -124,29 +124,29 @@ static inline u8 bcma_crc8(u8 crc, u8 data)
return t[crc ^ data];
}
static u8 bcma_sprom_crc(const u16 *sprom)
static u8 bcma_sprom_crc(const u16 *sprom, size_t words)
{
int word;
u8 crc = 0xFF;
for (word = 0; word < SSB_SPROMSIZE_WORDS_R4 - 1; word++) {
for (word = 0; word < words - 1; word++) {
crc = bcma_crc8(crc, sprom[word] & 0x00FF);
crc = bcma_crc8(crc, (sprom[word] & 0xFF00) >> 8);
}
crc = bcma_crc8(crc, sprom[SSB_SPROMSIZE_WORDS_R4 - 1] & 0x00FF);
crc = bcma_crc8(crc, sprom[words - 1] & 0x00FF);
crc ^= 0xFF;
return crc;
}
static int bcma_sprom_check_crc(const u16 *sprom)
static int bcma_sprom_check_crc(const u16 *sprom, size_t words)
{
u8 crc;
u8 expected_crc;
u16 tmp;
crc = bcma_sprom_crc(sprom);
tmp = sprom[SSB_SPROMSIZE_WORDS_R4 - 1] & SSB_SPROM_REVISION_CRC;
crc = bcma_sprom_crc(sprom, words);
tmp = sprom[words - 1] & SSB_SPROM_REVISION_CRC;
expected_crc = tmp >> SSB_SPROM_REVISION_CRC_SHIFT;
if (crc != expected_crc)
return -EPROTO;
@ -154,16 +154,16 @@ static int bcma_sprom_check_crc(const u16 *sprom)
return 0;
}
static int bcma_sprom_valid(const u16 *sprom)
static int bcma_sprom_valid(const u16 *sprom, size_t words)
{
u16 revision;
int err;
err = bcma_sprom_check_crc(sprom);
err = bcma_sprom_check_crc(sprom, words);
if (err)
return err;
revision = sprom[SSB_SPROMSIZE_WORDS_R4 - 1] & SSB_SPROM_REVISION_REV;
revision = sprom[words - 1] & SSB_SPROM_REVISION_REV;
if (revision != 8 && revision != 9) {
pr_err("Unsupported SPROM revision: %d\n", revision);
return -ENOENT;
@ -589,13 +589,13 @@ int bcma_sprom_get(struct bcma_bus *bus)
bcma_chipco_bcm4331_ext_pa_lines_ctl(&bus->drv_cc, false);
bcma_debug(bus, "SPROM offset 0x%x\n", offset);
bcma_sprom_read(bus, offset, sprom);
bcma_sprom_read(bus, offset, sprom, SSB_SPROMSIZE_WORDS_R4);
if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4331 ||
bus->chipinfo.id == BCMA_CHIP_ID_BCM43431)
bcma_chipco_bcm4331_ext_pa_lines_ctl(&bus->drv_cc, true);
err = bcma_sprom_valid(sprom);
err = bcma_sprom_valid(sprom, SSB_SPROMSIZE_WORDS_R4);
if (err) {
bcma_warn(bus, "invalid sprom read from the PCIe card, try to use fallback sprom\n");
err = bcma_fill_sprom_with_fallback(bus, &bus->sprom);