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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 05/18] i2c-at91: Use IS_ERR instead of checking for NULL
Date: Tue, 16 Feb 2016 17:29:06 -0800	[thread overview]
Message-ID: <1455672559-25061-6-git-send-email-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <1455672559-25061-1-git-send-email-andrew.smirnov@gmail.com>

Dev_request_mem_region doesn't return NULL to indicate error and IS_ERR
should be used in conjuction with it in order to detect failure.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 drivers/i2c/busses/i2c-at91.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c
index 622c56d..6db7243 100644
--- a/drivers/i2c/busses/i2c-at91.c
+++ b/drivers/i2c/busses/i2c-at91.c
@@ -426,9 +426,9 @@ static int at91_twi_probe(struct device_d *dev)
 	i2c_at91->pdata = i2c_data;
 
 	i2c_at91->base = dev_request_mem_region(dev, 0);
-	if (!i2c_at91->base) {
+	if (IS_ERR(i2c_at91->base)) {
 		dev_err(dev, "could not get memory region\n");
-		rc = -ENODEV;
+		rc = PTR_ERR(i2c_at91->base);
 		goto out_free;
 	}
 
-- 
2.5.0


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  parent reply	other threads:[~2016-02-17  1:30 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-17  1:29 [PATCH 00/17] RFC for additional 'nvmem' plumbing Andrey Smirnov
2016-02-17  1:29 ` [PATCH 01/18] common: Add EPROBE_DEFER to strerror Andrey Smirnov
2016-02-17  1:29 ` [PATCH 02/18] base: driver.c: Coalesce error checking code Andrey Smirnov
2016-02-17  1:29 ` [PATCH 03/18] [RFC] at91: Make IS_ERR work for I/O pointers Andrey Smirnov
2016-02-17  8:34   ` Sascha Hauer
2016-02-17 20:39     ` Andrey Smirnov
2016-02-18 10:26       ` Sascha Hauer
2016-02-17  1:29 ` [PATCH 04/18] [RFC] base/driver.c: Remove dev_request_mem_region_err_null Andrey Smirnov
2016-02-17  1:29 ` Andrey Smirnov [this message]
2016-02-17  1:29 ` [PATCH 06/18] clk-imx6: Call clk_enable on mmdc_ch0_axi_podf Andrey Smirnov
2016-02-17  1:29 ` [PATCH 07/18] fec_imx: Deallocate clocks when probe fails Andrey Smirnov
2016-02-17  1:29 ` [PATCH 08/18] [RFC] base: Introduce dev_request_mem_resource Andrey Smirnov
2016-02-17  1:29 ` [PATCH 09/18] fec_imx: Deallocate I/O resources if probe fails Andrey Smirnov
2016-02-17  1:29 ` [PATCH 10/18] fec_imx: Free phy_reset GPIO if when " Andrey Smirnov
2016-02-17  1:29 ` [PATCH 11/18] fec_imx: Use FEC_ECNTRL_RESET instead of a magic number Andrey Smirnov
2016-02-17  1:29 ` [PATCH 12/18] fec_imx: Impelemnt reset timeout Andrey Smirnov
2016-02-17  8:43   ` Sascha Hauer
2016-02-17  1:29 ` [PATCH 13/18] fec_imx: Deallocate DMA buffers when probe fails Andrey Smirnov
2016-02-17  1:29 ` [PATCH 14/18] fec_imx: Unregister MDIO " Andrey Smirnov
2016-02-17  1:29 ` [PATCH 15/18] [RFC] net: eth: Always use DEVICE_ID_DYNAMIC Andrey Smirnov
2016-02-17  2:40   ` Trent Piepho
2016-02-17  4:16     ` Andrey Smirnov
2016-02-18 19:30       ` Trent Piepho
2016-02-19 17:17         ` Andrey Smirnov
2016-02-17  1:29 ` [PATCH 16/18] [RFC] nvmem: Add of_nvmem_cell_from_cell_np Andrey Smirnov
2016-02-17  1:29 ` [PATCH 17/18] [RFC] nvmem: Add nvmem-ro-of-blob driver Andrey Smirnov
2016-02-17  8:52   ` Sascha Hauer
2016-02-17 20:40     ` Andrey Smirnov
2016-02-17  1:29 ` [PATCH 18/18] [RFC] nvmem: Add nvmem-sg driver Andrey Smirnov
2016-02-17  3:09 ` [PATCH 00/17] RFC for additional 'nvmem' plumbing Trent Piepho
2016-02-17  4:20   ` Andrey Smirnov

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