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From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: barebox@lists.infradead.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Subject: [PATCH 04/16] fec_imx: Deallocate I/O resources if probe fails
Date: Tue, 15 Mar 2016 20:33:39 -0700	[thread overview]
Message-ID: <1458099232-9050-4-git-send-email-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <1458099232-9050-1-git-send-email-andrew.smirnov@gmail.com>

Add a proper check for I/O memory resource allocation failure and
replace dev_request_mem_region with dev_request_mem_resource so it would
be possible to correctly deallocate device's I/O resources when probe
fails.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/net/fec_imx.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/net/fec_imx.c b/drivers/net/fec_imx.c
index 18a02e0..da4eb55 100644
--- a/drivers/net/fec_imx.c
+++ b/drivers/net/fec_imx.c
@@ -685,8 +685,10 @@ static int fec_probe(struct device_d *dev)
 		goto put_clk;
 
 	iores = dev_request_mem_resource(dev, 0);
-	if (IS_ERR(iores))
-		return PTR_ERR(iores);
+	if (IS_ERR(iores)) {
+		ret = PTR_ERR(iores);
+		goto disable_clk;
+	}
 	fec->regs = IOMEM(iores->start);
 
 	phy_reset = of_get_named_gpio(dev->device_node, "phy-reset-gpios", 0);
@@ -695,11 +697,11 @@ static int fec_probe(struct device_d *dev)
 
 		ret = gpio_request(phy_reset, "phy-reset");
 		if (ret)
-			goto disable_clk;
+			goto release_res;
 
 		ret = gpio_direction_output(phy_reset, 0);
 		if (ret)
-			goto disable_clk;
+			goto release_res;
 
 		mdelay(msec);
 		gpio_set_value(phy_reset, 1);
@@ -739,7 +741,7 @@ static int fec_probe(struct device_d *dev)
 	}
 
 	if (ret)
-		goto disable_clk;
+		goto release_res;
 
 	fec_init(edev);
 
@@ -759,6 +761,8 @@ static int fec_probe(struct device_d *dev)
 
 	return 0;
 
+release_res:
+	release_region(iores);
 disable_clk:
 	clk_disable(fec->clk);
 put_clk:
-- 
2.5.0


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  parent reply	other threads:[~2016-03-16  3:34 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-16  3:33 [PATCH 01/16] i.MX6: dts: Include local .dtsi's last Andrey Smirnov
2016-03-16  3:33 ` [PATCH 02/16] clk-imx6: Call clk_enable on mmdc_ch0_axi_podf Andrey Smirnov
2016-03-16  3:33 ` [PATCH 03/16] fec_imx: Deallocate clocks when probe fails Andrey Smirnov
2016-03-16  3:33 ` Andrey Smirnov [this message]
2016-03-16  3:33 ` [PATCH 05/16] fec_imx: Free phy_reset GPIO if " Andrey Smirnov
2016-03-16  3:33 ` [PATCH 06/16] fec_imx: Use FEC_ECNTRL_RESET instead of a magic number Andrey Smirnov
2016-03-16  3:33 ` [PATCH 07/16] fec_imx: Impelemnt reset timeout Andrey Smirnov
2016-03-16  5:46   ` Antony Pavlov
2016-03-16  3:33 ` [PATCH 08/16] fec_imx: Deallocate DMA buffers when probe fails Andrey Smirnov
2016-03-16  3:33 ` [PATCH 09/16] fec_imx: Unregister MDIO " Andrey Smirnov
2016-03-16  3:33 ` [PATCH 10/16] i.MX: Add revision detection for i.MX6D/Q Plus Andrey Smirnov
2016-03-16  3:33 ` [PATCH 11/16] ARM: Add errata 845369 workaround Andrey Smirnov
2016-03-16  3:33 ` [PATCH 12/16] i.MX6: Apply " Andrey Smirnov
2016-03-17  7:31   ` Stefan Christ
2016-03-21 16:08     ` Andrey Smirnov
2016-03-29 16:33       ` Trent Piepho
2016-03-16  3:33 ` [PATCH 13/16] L2x0: i.MX6: Replace magic numbers with constants Andrey Smirnov
2016-03-16  3:33 ` [PATCH 14/16] i.MX6: Apply PL310 errata base on PL310's revision Andrey Smirnov
2016-03-16  3:33 ` [PATCH 15/16] i.MX6: PL310: Adjust settings for performance Andrey Smirnov
2016-03-16  3:33 ` [PATCH 16/16] common: Add EPROBE_DEFER to strerror Andrey Smirnov
2016-03-17  7:25 ` [PATCH 01/16] i.MX6: dts: Include local .dtsi's last Sascha Hauer

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