From: Potin Lai <potin.lai.pt@gmail.com>
To: openbmc@lists.ozlabs.org, joel@jms.id.au
Cc: Potin Lai <potin.lai.pt@gmail.com>
Subject: [PATCH linux dev-5.15 1/1] leds: pca955x: fix return value checking of smbus block read
Date: Wed, 28 Sep 2022 16:57:01 +0800 [thread overview]
Message-ID: <20220928085701.1822967-1-potin.lai.pt@gmail.com> (raw)
In i2c_smbus_read_i2c_block_data(), it returns negtive value for error
code, otherwise returns data length of reading.
Change the if statement to "if (err < 0)" to indicate the real error
returned by i2c_smbus_read_i2c_block_data().
LORE Link: https://lore.kernel.org/all/20220928084709.1822312-1-potin.lai.pt@gmail.com/
Signed-off-by: Potin Lai <potin.lai.pt@gmail.com>
---
drivers/leds/leds-pca955x.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c
index cf0a9fe20086a..cba9876b11872 100644
--- a/drivers/leds/leds-pca955x.c
+++ b/drivers/leds/leds-pca955x.c
@@ -689,7 +689,7 @@ static int pca955x_probe(struct i2c_client *client)
err = i2c_smbus_read_i2c_block_data(client,
0x10 | (pca955x_num_input_regs(chip->bits) + 4), nls,
ls1);
- if (err)
+ if (err < 0)
return err;
for (i = 0; i < nls; ++i)
--
2.31.1
next reply other threads:[~2022-09-28 11:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-28 8:57 Potin Lai [this message]
2022-09-29 20:40 ` [PATCH linux dev-5.15 1/1] leds: pca955x: fix return value checking of smbus block read Eddie James
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