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pcmcia/yenta: guide users in case of problems with O2-bridges

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Some cards need the speedups on, some need them off. As we can't detect
this reliably, at least give the users a hint how to tweak the system.

Reported-by: David Bluecame <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
Signed-off-by: Dominik Brodowski <[email protected]>
This commit is contained in:
Wolfram Sang 2010-10-15 14:18:21 +02:00 • committed by Dominik Brodowski
commit a5360df941
1 changed files with 2 additions and 2 deletions
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4
drivers/pcmcia/o2micro.h
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@ -153,14 +153,14 @@ static int o2micro_override(struct yenta_socket *socket)
if (use_speedup) {
dev_info(&socket->dev->dev,
"O2: enabling read prefetch/write burst\n");
"O2: enabling read prefetch/write burst. If you experience problems or performance issues, use the yenta_socket parameter 'o2_speedup=off'\n");
config_writeb(socket, O2_RESERVED1,
a | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST);
config_writeb(socket, O2_RESERVED2,
b | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST);
} else {
dev_info(&socket->dev->dev,
"O2: disabling read prefetch/write burst\n");
"O2: disabling read prefetch/write burst. If you experience problems or performance issues, use the yenta_socket parameter 'o2_speedup=on'\n");
config_writeb(socket, O2_RESERVED1,
a & ~(O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST));
config_writeb(socket, O2_RESERVED2,