From 3389c99eb80d3d265b60a6b9822792b15aa14758 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Thu, 26 Sep 2013 10:29:20 -0700 Subject: [PATCH] staging: comedi: dt2801: fix using uninitialized variable warnings As pointed out by Fengguang Wu, the calls to dt2801_readdata() return the data read thru a pointer (the address of a local variable) passed as a parameter. If this local variable is not initialized it produces a warning during the build of the form: drivers/staging/comedi/drivers/dt2801.c: In function 'dt2801_ai_insn_read': drivers/staging/comedi/drivers/dt2801.c:273:14: warning: 'hb' is used uninitialized in this function [-Wuninitialized] Fix these warning by making sure the local variables are initialized. Signed-off-by: H Hartley Sweeten Reported-by: Fengguang Wu Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/dt2801.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/staging/comedi/drivers/dt2801.c b/drivers/staging/comedi/drivers/dt2801.c index 1a2b0e4b1ea5..811c8c59c017 100644 --- a/drivers/staging/comedi/drivers/dt2801.c +++ b/drivers/staging/comedi/drivers/dt2801.c @@ -260,7 +260,8 @@ static int dt2801_readdata(struct comedi_device *dev, int *data) static int dt2801_readdata2(struct comedi_device *dev, int *data) { - int lb, hb; + int lb = 0; + int hb = 0; int ret; ret = dt2801_readdata(dev, &lb); @@ -532,7 +533,7 @@ static int dt2801_dio_insn_bits(struct comedi_device *dev, unsigned int *data) { int which = (s == &dev->subdevices[3]) ? 1 : 0; - unsigned int val; + unsigned int val = 0; if (comedi_dio_update_state(s, data)) { dt2801_writecmd(dev, DT_C_WRITE_DIG); -- 2.11.0