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rt2x00: Fix BUG on rt2800usb when trying to read eFuse EEPROM.

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Current tree hits a BUG_ON in rt2x00_regbusy_read, because the eFuse EEPROM
reading code of rt2800lib uses the function without the csr_mutex locked.

Fix this by locking the csr_mutex for the of the EEPROM reading cycly and
using the _lock variants of the register reading and writing functions.

This also introcudes the register_read_lock function pointer in the
rt2800_ops structure.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Gertjan van Wingerde 2009-11-14 20:20:36 +01:00 • committed by John W. Linville
parent 16475b095a
commit 31a4cf1f22
4 changed files with 27 additions and 10 deletions
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1
drivers/net/wireless/rt2x00/rt2800pci.c
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@ -1089,6 +1089,7 @@ static int rt2800pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
static const struct rt2800_ops rt2800pci_rt2800_ops = {
.register_read = rt2x00pci_register_read,
.register_read_lock = rt2x00pci_register_read, /* same for PCI */
.register_write = rt2x00pci_register_write,
.register_write_lock = rt2x00pci_register_write, /* same for PCI */