This is a note to let you know that I've just added the patch titled
misc: sram: fix resource leaks in probe error path
to my char-misc git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
in the char-misc-testing branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will be merged to the char-misc-next branch sometime soon,
after it passes testing, and the merge window is open.
If you have any questions about this process, please let me know.
>From f294d00961d1d869ecffa60e280eeeee1ccf9a49 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@xxxxxxxxxx>
Date: Tue, 3 Jul 2018 12:05:47 +0200
Subject: misc: sram: fix resource leaks in probe error path
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@xxxxxxxxxxxxxxx> # 4.9
Cc: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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
