[092/127] staging: rtl8187se: Change panic to warn when RF switch turned off

From: Greg KH
Date: Tue Dec 07 2010 - 19:55:52 EST


2.6.32-stable review patch. If anyone has any objections, please let us know.

------------------

From: Larry Finger <Larry.Finger@xxxxxxxxxxxx>

commit f36d83a8cb7224f45fdfa1129a616dff56479a09 upstream.

This driver issues a kernel panic over conditions that do not
justify such drastic action. Change these to log entries with
a stack dump.

This patch fixes the system crash reported in
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/674285.

Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
Reported-and-Tested-by: Robie Basik <rb-oss-3@xxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
drivers/staging/rtl8187se/r8185b_init.c | 32 +++++++++++++++++++++++---------
1 file changed, 23 insertions(+), 9 deletions(-)

--- a/drivers/staging/rtl8187se/r8185b_init.c
+++ b/drivers/staging/rtl8187se/r8185b_init.c
@@ -356,8 +356,12 @@ HwHSSIThreeWire(
}
udelay(10);
}
- if (TryCnt == TC_3W_POLL_MAX_TRY_CNT)
- panic("HwThreeWire(): CmdReg: %#X RE|WE bits are not clear!!\n", u1bTmp);
+ if (TryCnt == TC_3W_POLL_MAX_TRY_CNT) {
+ printk(KERN_ERR "rtl8187se: HwThreeWire(): CmdReg:"
+ " %#X RE|WE bits are not clear!!\n", u1bTmp);
+ dump_stack();
+ return 0;
+ }

// RTL8187S HSSI Read/Write Function
u1bTmp = read_nic_byte(dev, RF_SW_CONFIG);
@@ -397,13 +401,23 @@ HwHSSIThreeWire(
int idx;
int ByteCnt = nDataBufBitCnt / 8;
//printk("%d\n",nDataBufBitCnt);
- if ((nDataBufBitCnt % 8) != 0)
- panic("HwThreeWire(): nDataBufBitCnt(%d) should be multiple of 8!!!\n",
- nDataBufBitCnt);
-
- if (nDataBufBitCnt > 64)
- panic("HwThreeWire(): nDataBufBitCnt(%d) should <= 64!!!\n",
- nDataBufBitCnt);
+ if ((nDataBufBitCnt % 8) != 0) {
+ printk(KERN_ERR "rtl8187se: "
+ "HwThreeWire(): nDataBufBitCnt(%d)"
+ " should be multiple of 8!!!\n",
+ nDataBufBitCnt);
+ dump_stack();
+ nDataBufBitCnt += 8;
+ nDataBufBitCnt &= ~7;
+ }
+
+ if (nDataBufBitCnt > 64) {
+ printk(KERN_ERR "rtl8187se: HwThreeWire():"
+ " nDataBufBitCnt(%d) should <= 64!!!\n",
+ nDataBufBitCnt);
+ dump_stack();
+ nDataBufBitCnt = 64;
+ }

for(idx = 0; idx < ByteCnt; idx++)
{


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