From: Stephen Rothwell <sfr@canb.auug.org.au>
To: Joel Stanley <joel@jms.id.au>
Cc: devicetree-compiler@vger.kernel.org,
David Gibson <david@gibson.dropbear.id.au>,
linux-kernel@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH v2 2/2] checks: Improve i2c reg property checking
Date: Thu, 28 May 2020 18:31:15 +1000 [thread overview]
Message-ID: <20200528183115.05b2519a@canb.auug.org.au> (raw)
In-Reply-To: <20200528072037.1402346-3-joel@jms.id.au>
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Hi Joel,
On Thu, 28 May 2020 16:50:37 +0930 Joel Stanley <joel@jms.id.au> wrote:
>
>
> #define I2C_OWN_SLAVE_ADDRESS (1 << 30)
> +#define I2C_TEN_BIT_ADDRESS (1 << 31)
>
> static void check_i2c_bus_reg(struct check *c, struct dt_info *dti, struct node *node)
> {
> @@ -1057,10 +1058,13 @@ static void check_i2c_bus_reg(struct check *c, struct dt_info *dti, struct node
> reg = fdt32_to_cpu(*(cells++));
> /* Ignore I2C_OWN_SLAVE_ADDRESS */
> reg &= ~I2C_OWN_SLAVE_ADDRESS;
> - if (reg > 0x3ff)
> +
> + if ((reg & I2C_TEN_BIT_ADDRESS) && reg > 0x3ff)
Shouldn't this be
if ((reg & I2C_TEN_BIT_ADDRESS) && ((reg & ~I2C_TEN_BIT_ADDRESS) > 0x3ff))
--
Cheers,
Stephen Rothwell
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next prev parent reply other threads:[~2020-05-28 8:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-28 7:20 [PATCH v2 0/2] dtc: Improve checks for i2c reg properties Joel Stanley
2020-05-28 7:20 ` [PATCH v2 1/2] checks: Remove warning for I2C_OWN_SLAVE_ADDRESS Joel Stanley
2020-05-28 7:20 ` [PATCH v2 2/2] checks: Improve i2c reg property checking Joel Stanley
2020-05-28 8:31 ` Stephen Rothwell [this message]
2020-05-28 8:44 ` Joel Stanley
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