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staging/et131x: fix et131x_rx_dma_disable halt_status usage 

Commit 1bd751c1ab
("Staging: et131x: Clean up rxdma_csr") changed csr from bitfield to
u32, but failed to convert 2 uses of halt_status bit. It did:

- if (csr.bits.halt_status != 1)
+ if ((csr & 0x00020000) != 1)

which is wrong, because second version is always true.
Fix it.

This bug was found by coccinelle (http://coccinelle.lip6.fr/).

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Marcin Slusarz 2011-02-20 20:03:34 +01:00 committed by Greg Kroah-Hartman
parent 3f60554cb1
commit 1af4791552
1 changed files with 2 additions and 2 deletions
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4
drivers/staging/et131x/et1310_rx.c
View File

@ -717,10 +717,10 @@ void et131x_rx_dma_disable(struct et131x_adapter *etdev)
/* Setup the receive dma configuration register */
writel(0x00002001, &etdev->regs->rxdma.csr);
csr = readl(&etdev->regs->rxdma.csr);
if ((csr & 0x00020000) != 1) { /* Check halt status (bit 17) */
if ((csr & 0x00020000) == 0) { /* Check halt status (bit 17) */
udelay(5);
csr = readl(&etdev->regs->rxdma.csr);
if ((csr & 0x00020000) != 1)
if ((csr & 0x00020000) == 0)
dev_err(&etdev->pdev->dev,
"RX Dma failed to enter halt state. CSR 0x%08x\n",
csr);