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brcm80211: smac: change buffer endianess convert function interface 

The buffer endianess conversion functions in srom.c had a size
argument giving number of bytes but the function converts words.
Providing the number of words to the function is more sensible
so that is done in this patch.

Reported-by: Pavel Roskin <proski@gnu.org>
Reported-by: Larry Finger <Larry.Finger@lwfinger.net>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Alwin Beukers <alwin@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Arend van Spriel 2011-10-21 16:16:35 +02:00 committed by John W. Linville
parent d1a5b6fbec
commit 028f78d43d
1 changed files with 15 additions and 18 deletions
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33
drivers/net/wireless/brcm80211/brcmsmac/srom.c
View File

@ -617,18 +617,16 @@ static uint mask_width(u16 mask)
return 0; return 0;
} }
static inline void le16_to_cpu_buf(u16 *buf, unsigned int size) static inline void le16_to_cpu_buf(u16 *buf, uint nwords)
{ {
size /= 2; while (nwords--)
while (size--) *(buf + nwords) = le16_to_cpu(*(__le16 *)(buf + nwords));
*(buf + size) = le16_to_cpu(*(__le16 *)(buf + size));
} }
static inline void cpu_to_le16_buf(u16 *buf, unsigned int size) static inline void cpu_to_le16_buf(u16 *buf, uint nwords)
{ {
size /= 2; while (nwords--)
while (size--) *(__le16 *)(buf + nwords) = cpu_to_le16(*(buf + nwords));
*(__le16 *)(buf + size) = cpu_to_le16(*(buf + size));
} }
/* /*
@ -807,12 +805,12 @@ sprom_read_pci(struct si_pub *sih, u8 __iomem *sprom, uint wordoff,
err = -EIO; err = -EIO;
else else
/* now correct the endianness of the byte array */ /* now correct the endianness of the byte array */
le16_to_cpu_buf(buf, nbytes); le16_to_cpu_buf(buf, nwords);
return err; return err;
} }
static int otp_read_pci(struct si_pub *sih, u16 *buf, uint bufsz) static int otp_read_pci(struct si_pub *sih, u16 *buf, uint nwords)
{ {
u8 *otp; u8 *otp;
uint sz = OTP_SZ_MAX / 2; /* size in words */ uint sz = OTP_SZ_MAX / 2; /* size in words */
@ -824,7 +822,8 @@ static int otp_read_pci(struct si_pub *sih, u16 *buf, uint bufsz)
err = otp_read_region(sih, OTP_HW_RGN, (u16 *) otp, &sz); err = otp_read_region(sih, OTP_HW_RGN, (u16 *) otp, &sz);
memcpy(buf, otp, bufsz); sz = min_t(uint, sz, nwords);
memcpy(buf, otp, sz * 2);
kfree(otp); kfree(otp);
@ -836,14 +835,12 @@ static int otp_read_pci(struct si_pub *sih, u16 *buf, uint bufsz)
*/ */
return -ENODATA; return -ENODATA;
/* fixup the endianness so crc8 will pass */ if (crc8(brcms_srom_crc8_table, (u8 *) buf, sz * 2,
cpu_to_le16_buf(buf, bufsz);
if (crc8(brcms_srom_crc8_table, (u8 *) buf, SROM4_WORDS * 2,
CRC8_INIT_VALUE) != CRC8_GOOD_VALUE(brcms_srom_crc8_table)) CRC8_INIT_VALUE) != CRC8_GOOD_VALUE(brcms_srom_crc8_table))
err = -EIO; err = -EIO;
else
/* now correct the endianness of the byte array */ /* now correct the endianness of the byte array */
le16_to_cpu_buf(buf, bufsz); le16_to_cpu_buf(buf, sz);
return err; return err;
} }
@ -880,7 +877,7 @@ static int initvars_srom_pci(struct si_pub *sih, void __iomem *curmap)
sromrev = srom[SROM4_CRCREV] & 0xff; sromrev = srom[SROM4_CRCREV] & 0xff;
} else { } else {
/* Use OTP if SPROM not available */ /* Use OTP if SPROM not available */
err = otp_read_pci(sih, srom, SROM_MAX); err = otp_read_pci(sih, srom, SROM4_WORDS);
if (err == 0) if (err == 0)
/* OTP only contain SROM rev8/rev9 for now */ /* OTP only contain SROM rev8/rev9 for now */
sromrev = srom[SROM4_CRCREV] & 0xff; sromrev = srom[SROM4_CRCREV] & 0xff;