diff options
| author | Frank Schaefer <fschaefer.oss@googlemail.com> | 2013-03-03 15:37:38 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-03-04 15:53:54 -0300 |
| commit | 0c28dcc054ecbcd16e197bd9bf9b394cc1f691c5 (patch) | |
| tree | 98bd83a09396675cd9d17bb77c59c8eac0e629c5 /drivers/media/usb/em28xx/em28xx-i2c.c | |
| parent | f55eacbe744f696fa5ff48fe4fdc0f00edc08619 (diff) | |
| download | linux-0c28dcc054ecbcd16e197bd9bf9b394cc1f691c5.tar.gz linux-0c28dcc054ecbcd16e197bd9bf9b394cc1f691c5.tar.xz | |
[media] em28xx: fix eeprom data endianess
The data is stored as little endian in the eeprom.
Hence the correct data types should be used and the data should be converted
to the machine endianess before using it.
The eeprom id (key) also isn't a 32 bit value but 4 separate bytes instead.
[mchehab@redhat.com: Fix CodingStyle]
Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/usb/em28xx/em28xx-i2c.c')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-i2c.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-i2c.c b/drivers/media/usb/em28xx/em28xx-i2c.c index b8a9bee836fa..1b90e7536aa5 100644 --- a/drivers/media/usb/em28xx/em28xx-i2c.c +++ b/drivers/media/usb/em28xx/em28xx-i2c.c @@ -434,19 +434,21 @@ static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned char *eedata, int len) printk("\n"); } - if (em_eeprom->id != 0x9567eb1a) { + if (em_eeprom->id[0] != 0x1a || em_eeprom->id[1] != 0xeb || + em_eeprom->id[2] != 0x67 || em_eeprom->id[3] != 0x95) { em28xx_errdev("Unknown eeprom type or eeprom corrupted !"); return -ENODEV; } dev->hash = em28xx_hash_mem(eedata, len, 32); - em28xx_info("EEPROM ID = 0x%08x, EEPROM hash = 0x%08lx\n", - em_eeprom->id, dev->hash); + em28xx_info("EEPROM ID = %02x %02x %02x %02x, EEPROM hash = 0x%08lx\n", + em_eeprom->id[0], em_eeprom->id[1], + em_eeprom->id[2], em_eeprom->id[3], dev->hash); em28xx_info("EEPROM info:\n"); - switch (em_eeprom->chip_conf >> 4 & 0x3) { + switch (le16_to_cpu(em_eeprom->chip_conf) >> 4 & 0x3) { case 0: em28xx_info("\tNo audio on board.\n"); break; @@ -461,13 +463,13 @@ static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned char *eedata, int len) break; } - if (em_eeprom->chip_conf & 1 << 3) + if (le16_to_cpu(em_eeprom->chip_conf) & 1 << 3) em28xx_info("\tUSB Remote wakeup capable\n"); - if (em_eeprom->chip_conf & 1 << 2) + if (le16_to_cpu(em_eeprom->chip_conf) & 1 << 2) em28xx_info("\tUSB Self power capable\n"); - switch (em_eeprom->chip_conf & 0x3) { + switch (le16_to_cpu(em_eeprom->chip_conf) & 0x3) { case 0: em28xx_info("\t500mA max power\n"); break; @@ -483,9 +485,9 @@ static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned char *eedata, int len) } em28xx_info("\tTable at offset 0x%02x, strings=0x%04x, 0x%04x, 0x%04x\n", em_eeprom->string_idx_table, - em_eeprom->string1, - em_eeprom->string2, - em_eeprom->string3); + le16_to_cpu(em_eeprom->string1), + le16_to_cpu(em_eeprom->string2), + le16_to_cpu(em_eeprom->string3)); return 0; } |