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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 08/16] fec_imx: Deallocate DMA buffers when probe fails
Date: Tue, 15 Mar 2016 20:33:43 -0700	[thread overview]
Message-ID: <1458099232-9050-8-git-send-email-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <1458099232-9050-1-git-send-email-andrew.smirnov@gmail.com>

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/net/fec_imx.c | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/drivers/net/fec_imx.c b/drivers/net/fec_imx.c
index fc2c8e1..465dcf9 100644
--- a/drivers/net/fec_imx.c
+++ b/drivers/net/fec_imx.c
@@ -621,6 +621,12 @@ static int fec_alloc_receive_packets(struct fec_priv *fec, int count, int size)
 	return 0;
 }
 
+static void fec_free_receive_packets(struct fec_priv *fec, int count, int size)
+{
+	void *p = phys_to_virt(fec->rbd_base[0].data_pointer);
+	dma_free_coherent(p, 0, size * count);
+}
+
 #ifdef CONFIG_OFDEVICE
 static int fec_probe_dt(struct device_d *dev, struct fec_priv *fec)
 {
@@ -722,8 +728,9 @@ static int fec_probe(struct device_d *dev)
 	 * reserve memory for both buffer descriptor chains at once
 	 * Datasheet forces the startaddress of each chain is 16 byte aligned
 	 */
-	base = dma_alloc_coherent((2 + FEC_RBD_NUM) *
-			sizeof(struct buffer_descriptor), DMA_ADDRESS_BROKEN);
+#define FEC_XBD_SIZE ((2 + FEC_RBD_NUM) * sizeof(struct buffer_descriptor))
+
+	base = dma_alloc_coherent(FEC_XBD_SIZE, DMA_ADDRESS_BROKEN);
 	fec->rbd_base = base;
 	base += FEC_RBD_NUM * sizeof(struct buffer_descriptor);
 	fec->tbd_base = base;
@@ -731,7 +738,9 @@ static int fec_probe(struct device_d *dev)
 	writel(virt_to_phys(fec->tbd_base), fec->regs + FEC_ETDSR);
 	writel(virt_to_phys(fec->rbd_base), fec->regs + FEC_ERDSR);
 
-	fec_alloc_receive_packets(fec, FEC_RBD_NUM, FEC_MAX_PKT_SIZE);
+	ret = fec_alloc_receive_packets(fec, FEC_RBD_NUM, FEC_MAX_PKT_SIZE);
+	if (ret < 0)
+		goto free_xbd;
 
 	if (dev->device_node) {
 		ret = fec_probe_dt(dev, fec);
@@ -746,7 +755,7 @@ static int fec_probe(struct device_d *dev)
 	}
 
 	if (ret)
-		goto free_gpio;
+		goto free_receive_packets;
 
 	fec_init(edev);
 
@@ -766,6 +775,10 @@ static int fec_probe(struct device_d *dev)
 
 	return 0;
 
+free_receive_packets:
+	fec_free_receive_packets(fec, FEC_RBD_NUM, FEC_MAX_PKT_SIZE);
+free_xbd:
+	dma_free_coherent(fec->rbd_base, 0, FEC_XBD_SIZE);
 free_gpio:
 	if (gpio_is_valid(phy_reset))
 		gpio_free(phy_reset);
-- 
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 ` [PATCH 04/16] fec_imx: Deallocate I/O resources if " Andrey Smirnov
2016-03-16  3:33 ` [PATCH 05/16] fec_imx: Free phy_reset GPIO if when " 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 ` Andrey Smirnov [this message]
2016-03-16  3:33 ` [PATCH 09/16] fec_imx: Unregister MDIO when probe fails 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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