lkml.org 
[lkml]   [2015]   [Feb]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH V5 2/3] bfin_can: rewrite the driver into common style with MMU
Date
Rewrite the blackfin CAN driver into more common style in three ways:
part 1/3: rewrite blackfin style of read/write into common readw/writew
part 2/3: introduce ioremap to be compitable with MMU enabled arch
part 3/3: merge the header file from the blackfin arch dependent
location to driver code directly, note the original copy of more completed
bfin_can.h in arch depentdent location is reserved for reg test purpose

V5 changes: merge contents of header file into drivere code in patch 3/3
V4 changes: remove unused variable in patch 2/3
V3 changes: remove redundant cast in patch 2/3
V2 changes: split patch into two parts
V1 changes: rewrite code into common style

Signed-off-by: Aaron Wu <Aaron.wu@analog.com>
---
drivers/net/can/bfin_can.c | 22 ++++++++--------------
1 file changed, 8 insertions(+), 14 deletions(-)

diff --git a/drivers/net/can/bfin_can.c b/drivers/net/can/bfin_can.c
index 0a5eff4..0209c14 100644
--- a/drivers/net/can/bfin_can.c
+++ b/drivers/net/can/bfin_can.c
@@ -551,16 +551,10 @@ static int bfin_can_probe(struct platform_device *pdev)
goto exit;
}

- if (!request_mem_region(res_mem->start, resource_size(res_mem),
- dev_name(&pdev->dev))) {
- err = -EBUSY;
- goto exit;
- }
-
/* request peripheral pins */
err = peripheral_request_list(pdata, dev_name(&pdev->dev));
if (err)
- goto exit_mem_release;
+ goto exit;

dev = alloc_bfin_candev();
if (!dev) {
@@ -569,7 +563,13 @@ static int bfin_can_probe(struct platform_device *pdev)
}

priv = netdev_priv(dev);
- priv->membase = (void __iomem *)res_mem->start;
+
+ priv->membase = devm_ioremap_resource(&pdev->dev, res_mem);
+ if (IS_ERR(priv->membase)) {
+ dev_err(&pdev->dev, "Cannot map IO\n");
+ return PTR_ERR(priv->membase);
+ }
+
priv->rx_irq = rx_irq->start;
priv->tx_irq = tx_irq->start;
priv->err_irq = err_irq->start;
@@ -601,8 +601,6 @@ exit_candev_free:
free_candev(dev);
exit_peri_pin_free:
peripheral_free_list(pdata);
-exit_mem_release:
- release_mem_region(res_mem->start, resource_size(res_mem));
exit:
return err;
}
@@ -611,15 +609,11 @@ static int bfin_can_remove(struct platform_device *pdev)
{
struct net_device *dev = platform_get_drvdata(pdev);
struct bfin_can_priv *priv = netdev_priv(dev);
- struct resource *res;

bfin_can_set_reset_mode(dev);

unregister_candev(dev);

- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, resource_size(res));
-
peripheral_free_list(priv->pin_list);

free_candev(dev);
--
1.7.9.5


\
 
 \ /
  Last update: 2015-02-05 12:21    [W:0.047 / U:1.892 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site