From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Irina Tirdea To: Jonathan Cameron , linux-iio@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Hartmut Knaack , Irina Tirdea Subject: [PATCH 1/2] tools: iio: fix mask for 32 bit sensor data Date: Thu, 23 Jul 2015 20:22:51 +0300 Message-Id: <1437672172-21189-2-git-send-email-irina.tirdea@intel.com> In-Reply-To: <1437672172-21189-1-git-send-email-irina.tirdea@intel.com> References: <1437672172-21189-1-git-send-email-irina.tirdea@intel.com> List-ID: When the the sensor data uses 32 bits out of 32, generic_buffer prints the value 0 for all data read. In this case, the mask is shifted 32 bits, which is beyond the size of an integer. This will lead to the mask always being 0. Before printing, the mask is applied to the raw value, thus generating a final value of 0. Fix the mask by shifting a 64 bit value instead of an integer. Signed-off-by: Irina Tirdea --- tools/iio/iio_utils.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/iio/iio_utils.c b/tools/iio/iio_utils.c index 1dcdf03..a95270f 100644 --- a/tools/iio/iio_utils.c +++ b/tools/iio/iio_utils.c @@ -168,7 +168,7 @@ int iioutils_get_type(unsigned *is_signed, unsigned *bytes, unsigned *bits_used, if (*bits_used == 64) *mask = ~0; else - *mask = (1 << *bits_used) - 1; + *mask = (1ULL << *bits_used) - 1; *is_signed = (signchar == 's'); if (fclose(sysfsfp)) { -- 1.9.1