From: Jagan Teki <jagannadh.teki@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] sf: fix timebase data type in _wait_ready()
Date: Wed, 6 Apr 2016 16:52:24 +0530 [thread overview]
Message-ID: <CAD6G_RQvVvk2peDDCc1sKmApoKX20rBOysnRgx-mqbGRGDTbVQ@mail.gmail.com> (raw)
In-Reply-To: <20160405000154.GB23166@bill-the-cat>
On 5 April 2016 at 05:31, Tom Rini <trini@konsulko.com> wrote:
> On Mon, Apr 04, 2016 at 11:03:52AM -0600, Stephen Warren wrote:
>
>> From: Stephen Warren <swarren@nvidia.com>
>>
>> get_timer() returns an unsigned 64-bit value, but is currently assigned to
>> a signed 32-bit variable. Due to sign extension and data truncation, this
>> causes the timeout loop in spi_flash_cmd_wait_ready() to immediately (and
>> incorrectly) fire for about 50% of all time values, based on whether bit
>> 31 is set. In sandbox at least, this causes the test to pass or fail based
>> on system uptime, as opposed to time since the U-Boot binary was started.
>>
>> Fixes: 4efad20a1751 ("sf: Update status reg check in spi_flash_cmd_wait_ready")
>> Signed-off-by: Stephen Warren <swarren@nvidia.com>
>
> Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
--
Jagan.
next prev parent reply other threads:[~2016-04-06 11:22 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-04 17:03 [U-Boot] [PATCH] sf: fix timebase data type in _wait_ready() Stephen Warren
2016-04-05 0:01 ` Tom Rini
2016-04-06 11:22 ` Jagan Teki [this message]
2016-04-12 15:43 ` Stephen Warren
2016-04-12 16:03 ` Tom Rini
2016-04-21 5:49 ` Stephen Warren
2016-04-25 16:44 ` Stephen Warren
2016-04-25 16:46 ` Tom Rini
2016-04-26 0:16 ` [U-Boot] " Tom Rini
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