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p54: enhance rssi->dBm database import

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This patch fixes several shortcomings of the
previous implementation. Features of the
rewrite include:

 * handles undocumented "0x0000" word at the
   start of the frequency table.
   (Affected some early? DELL 1450 USB devices
    and my Symbol 5GHz miniPCI card.)

 * supports more than just one reference point
   per band. (Also needed for the Symbol card.)

 * ships with default values in case the eeprom
   data is damaged, absent or unsupported.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Christian Lamparter
2011-02-12 22:32:49 +01:00
committed by John W. Linville
parent a3162eed04
commit 7a047f4f2f
7 changed files with 176 additions and 41 deletions
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drivers/net/wireless/p54/lmac.h
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@@ -551,6 +551,7 @@ int p54_upload_key(struct p54_common *priv, u8 algo, int slot,
/* eeprom */
int p54_download_eeprom(struct p54_common *priv, void *buf,
u16 offset, u16 len);
struct p54_rssi_db_entry *p54_rssi_find(struct p54_common *p, const u16 freq);
/* utility */
u8 *p54_find_ie(struct sk_buff *skb, u8 ie);