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List:       linux-arm-kernel
Subject:    Build failure of atmel_serial in 2.6.32-rc1.
From:       Gilles Chanteperdrix <gilles.chanteperdrix () xenomai ! org>
Date:       2009-09-30 20:50:50
Message-ID: 4AC3C4AA.7090404 () xenomai ! org
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Hi,

I have just tried to build 2.6.32-rc1 for AT91 with CodeSourcery 2009q1,
and the build fails at:

BUILD_BUG_ON(!is_power_of_2(ATMEL_SERIAL_RINGSIZE));

file drivers/serial/atmel_serial.c in atmel_serial_probe(). The error
message being:
drivers/serial/atmel_serial.c: In function 'atmel_serial_probe':
drivers/serial/atmel_serial.c:1534: error: bit-field '<anonymous>' width
not an integer constant

Replacing the BUILD_BUG_ON with a BUG_ON results in a runnable kernel,
so ATMEL_SERIAL_RINGSIZE really is a power of 2.

Regards.

-- 
					    Gilles.

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