linux-kernel - [PATCH] staging: comedi: das1800: remove unused variable

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Message-Id: <1459866185-1722-1-git-send-email-sudipm.mukherjee@gmail.com>
Date:	Tue,  5 Apr 2016 19:53:05 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Ian Abbott <abbotti@....co.uk>,
	H Hartley Sweeten <hsweeten@...ionengravers.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: [PATCH] staging: comedi: das1800: remove unused variable

The variable unipolar was never used.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@...ethink.co.uk>
---

There may be a chance that reading from DAS1800_CONTROL_C is necessary
before reading from DAS1800_STATUS. If that is true then please discard
this patch.

 drivers/staging/comedi/drivers/das1800.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/staging/comedi/drivers/das1800.c b/drivers/staging/comedi/drivers/das1800.c
index 94078118..76cf2cd 100644
--- a/drivers/staging/comedi/drivers/das1800.c
+++ b/drivers/staging/comedi/drivers/das1800.c
@@ -482,9 +482,6 @@ static void das1800_handle_fifo_not_empty(struct comedi_device *dev,
 {
 	struct comedi_cmd *cmd = &s->async->cmd;
 	unsigned short dpnt;
-	int unipolar;
-
-	unipolar = inb(dev->iobase + DAS1800_CONTROL_C) & UB;
 
 	while (inb(dev->iobase + DAS1800_STATUS) & FNE) {
 		dpnt = inw(dev->iobase + DAS1800_FIFO);
-- 
1.9.1