linux-kernel - [PATCH 3.14 031/158] spi: dw: Dont call kfree for memory allocated by devm

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Date:	Sun,  4 May 2014 11:39:00 -0400
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Axel Lin <axel.lin@...ics.com>,
	Baruch Siach <baruch@...s.co.il>,
	Mark Brown <broonie@...aro.org>
Subject: [PATCH 3.14 031/158] spi: dw: Dont call kfree for memory allocated by devm_kzalloc

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Axel Lin <axel.lin@...ics.com>

commit c63f5da00845143de621e991ea186be0829647ee upstream.

With devm_kzalloc, the memory is automatically freed when spi_device detach from
the bus.

Fixes: commit 43f627ac9de42 (spi: dw: fix memory leak on error path)
Signed-off-by: Axel Lin <axel.lin@...ics.com>
Acked-by: Baruch Siach <baruch@...s.co.il>
Signed-off-by: Mark Brown <broonie@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/spi/spi-dw.c |    7 -------
 1 file changed, 7 deletions(-)

--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c
@@ -671,12 +671,6 @@ static int dw_spi_setup(struct spi_devic
 	return 0;
 }
 
-static void dw_spi_cleanup(struct spi_device *spi)
-{
-	struct chip_data *chip = spi_get_ctldata(spi);
-	kfree(chip);
-}
-
 static int init_queue(struct dw_spi *dws)
 {
 	INIT_LIST_HEAD(&dws->queue);
@@ -806,7 +800,6 @@ int dw_spi_add_host(struct device *dev,
 	master->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16);
 	master->bus_num = dws->bus_num;
 	master->num_chipselect = dws->num_cs;
-	master->cleanup = dw_spi_cleanup;
 	master->setup = dw_spi_setup;
 	master->transfer = dw_spi_transfer;
 


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