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libertas: Fix problem with broken V4 firmware on CF8381

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Firmware V4 on CF8381 reports region code shifted by 1 byte to left.
The following patch checks for this and handles it properly.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Marek Vasut 2009-07-16 19:19:53 +02:00 committed by John W. Linville
parent 5d2214ac5e
commit 154839962a
2 changed files with 9 additions and 1 deletions
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8
drivers/net/wireless/libertas/cmd.c
View File

@ -135,8 +135,14 @@ int lbs_update_hw_spec(struct lbs_private *priv)
/* Clamp region code to 8-bit since FW spec indicates that it should
* only ever be 8-bit, even though the field size is 16-bit. Some firmware
* returns non-zero high 8 bits here.
*
* Firmware version 4.0.102 used in CF8381 has region code shifted. We
* need to check for this problem and handle it properly.
*/
priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF;
if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V4)
priv->regioncode = (le16_to_cpu(cmd.regioncode) >> 8) & 0xFF;
else
priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF;
for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) {
/* use the region code to search for the index */

2
drivers/net/wireless/libertas/defs.h
View File

@ -234,6 +234,8 @@ static inline void lbs_deb_hex(unsigned int grp, const char *prompt, u8 *buf, in
/** Mesh enable bit in FW capability */
#define MESH_CAPINFO_ENABLE_MASK (1<<16)
/** FW definition from Marvell v4 */
#define MRVL_FW_V4 (0x04)
/** FW definition from Marvell v5 */
#define MRVL_FW_V5 (0x05)
/** FW definition from Marvell v10 */