lkml.org 
[lkml]   [2018]   [Jul]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/2] misc: sram: fix resource leaks in probe error path
Date
Make sure to disable clocks and deregister any exported partitions
before returning on late probe errors.

Note that since commit ee895ccdf776 ("misc: sram: fix enabled clock leak
on error path"), partitions are deliberately exported before enabling
the clock so we stick to that logic here. A follow up patch will address
this.

Fixes: 2ae2e28852f2 ("misc: sram: add Atmel securam support")
Cc: stable <stable@vger.kernel.org> # 4.9
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
drivers/misc/sram.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/sram.c b/drivers/misc/sram.c
index c5dc6095686a..679647713e36 100644
--- a/drivers/misc/sram.c
+++ b/drivers/misc/sram.c
@@ -407,13 +407,20 @@ static int sram_probe(struct platform_device *pdev)
if (init_func) {
ret = init_func();
if (ret)
- return ret;
+ goto err_disable_clk;
}

dev_dbg(sram->dev, "SRAM pool: %zu KiB @ 0x%p\n",
gen_pool_size(sram->pool) / 1024, sram->virt_base);

return 0;
+
+err_disable_clk:
+ if (sram->clk)
+ clk_disable_unprepare(sram->clk);
+ sram_free_partitions(sram);
+
+ return ret;
}

static int sram_remove(struct platform_device *pdev)
--
2.18.0
\
 
 \ /
  Last update: 2018-07-03 12:07    [W:0.084 / U:0.444 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site