korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-23 12:14:10 +08:00
Code Issues Packages Projects Releases Wiki Activity

counter: ti-eqep: enable clock at probe

Browse Source 
[ Upstream commit 0cf81c73e4 ]

The TI eQEP clock is both a functional and interface clock. Since it is
required for the device to function, we should be enabling it at probe.

Up to now, we've just been lucky that the clock was enabled by something
else on the system already.

Fixes: f213729f67 ("counter: new TI eQEP driver")
Reviewed-by: Judith Mendez <jm@ti.com>
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20240621-ti-eqep-enable-clock-v2-1-edd3421b54d4@baylibre.com
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
David Lechner 2024-06-21 17:22:40 -05:00 committed by Greg Kroah-Hartman
parent da6c6adba5
commit 8fd89aa382
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/counter/ti-eqep.c
View File

@ -6,6 +6,7 @@
*/
#include <linux/bitops.h>
#include <linux/clk.h>
#include <linux/counter.h>
#include <linux/kernel.h>
#include <linux/mod_devicetable.h>
@ -376,6 +377,7 @@ static int ti_eqep_probe(struct platform_device *pdev)
struct counter_device *counter;
struct ti_eqep_cnt *priv;
void __iomem *base;
struct clk *clk;
int err;
counter = devm_counter_alloc(dev, sizeof(*priv));
@ -415,6 +417,10 @@ static int ti_eqep_probe(struct platform_device *pdev)
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
clk = devm_clk_get_enabled(dev, NULL);
if (IS_ERR(clk))
return dev_err_probe(dev, PTR_ERR(clk), "failed to enable clock\n");
err = counter_add(counter);
if (err < 0) {
pm_runtime_put_sync(dev);