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@kernel.org 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@vger.kernel.org # 4.9 Cc: Alexandre Belloni alexandre.belloni@free-electrons.com Signed-off-by: Johan Hovold johan@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.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)