linux-kernel - [PATCH 4/6] staging: comedi: addi_apci_1564: simplify the PCI bar reading and don't read the unused bars

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Message-Id: <1398562636-5900-1-git-send-email-chase.southwood@gmail.com>
Date:	Sat, 26 Apr 2014 20:37:16 -0500
From:	Chase Southwood <chase.southwood@...il.com>
To:	gregkh@...uxfoundation.org
Cc:	abbotti@....co.uk, hsweeten@...ionengravers.com,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
	Chase Southwood <chase.southwood@...il.com>
Subject: [PATCH 4/6] staging: comedi: addi_apci_1564: simplify the PCI bar reading and don't read the unused bars

This driver only uses PCI bar 1 (devpriv->i_IobaseAmcc), and PCI bar 2
(dev->iobase) doon't bother reading the unused PCI bars.

Signed-off-by: Chase Southwood <chase.southwood@...il.com>
Cc: Ian Abbott <abbotti@....co.uk>
Cc: H Hartley Sweeten <hsweeten@...ionengravers.com>
---

Hartley,

As far as I can tell from reading the I/O Mapping you sent me, these bar
numbers are correct, but it seems a bit odd, so please offer correction
if I am interpreting the document incorrectly.

Thanks,
Chase

 drivers/staging/comedi/drivers/addi_apci_1564.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/comedi/drivers/addi_apci_1564.c b/drivers/staging/comedi/drivers/addi_apci_1564.c
index fe42f9d..7e42d47 100644
--- a/drivers/staging/comedi/drivers/addi_apci_1564.c
+++ b/drivers/staging/comedi/drivers/addi_apci_1564.c
@@ -65,15 +65,8 @@ static int apci1564_auto_attach(struct comedi_device *dev,
 	if (ret)
 		return ret;
 
-	if (this_board->i_IorangeBase1)
-		dev->iobase = pci_resource_start(pcidev, 1);
-	else
-		dev->iobase = pci_resource_start(pcidev, 0);
-
-	devpriv->iobase = dev->iobase;
-	devpriv->i_IobaseAmcc = pci_resource_start(pcidev, 0);
-	devpriv->i_IobaseAddon = pci_resource_start(pcidev, 2);
-	devpriv->i_IobaseReserved = pci_resource_start(pcidev, 3);
+	dev->iobase = pci_resource_start(pcidev, 2);
+	devpriv->i_IobaseAmcc = pci_resource_start(pcidev, 1);
 
 	/* Initialize parameters that can be overridden in EEPROM */
 	devpriv->s_EeParameters.i_NbrAiChannel = this_board->i_NbrAiChannel;
-- 
1.9.0

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