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Date: Mon, 20 May 2019 08:53:47 -0500 From: Alex Elder <elder@...aro.org> To: arnd@...db.de, subashab@...eaurora.org, david.brown@...aro.org, agross@...nel.org, davem@...emloft.net Cc: bjorn.andersson@...aro.org, ilias.apalodimas@...aro.org, cpratapa@...eaurora.org, syadagir@...eaurora.org, evgreen@...omium.org, benchan@...gle.com, ejcaruso@...gle.com, netdev@...r.kernel.org, linux-arm-msm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: [PATCH 1/8] net: qualcomm: rmnet: fix struct rmnet_map_header The C bit-fields in the first byte of the rmnet_map_header structure are defined in the wrong order. The first byte should be formatted this way: +------- reserved_bit | +----- cd_bit | | v v +-----------+-+-+ | pad_len |R|C| +-----------+-+-+ 7 6 5 4 3 2 1 0 <-- bit position But the C bit-fields that define the first byte are defined this way: u8 pad_len:6; u8 reserved_bit:1; u8 cd_bit:1; And although this isn't portable, I can state that when I build it the result puts the bit-fields in the wrong location (e.g., the cd_bit is in bit position 7, when it should be position 0). Fix this by reordering the definitions of these struct members. Upcoming patches will reimplement these definitions portably. Signed-off-by: Alex Elder <elder@...aro.org> --- drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h index 884f1f52dcc2..b1ae9499c0b2 100644 --- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h +++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h @@ -40,9 +40,9 @@ enum rmnet_map_commands { }; struct rmnet_map_header { - u8 pad_len:6; - u8 reserved_bit:1; u8 cd_bit:1; + u8 reserved_bit:1; + u8 pad_len:6; u8 mux_id; __be16 pkt_len; } __aligned(1); -- 2.20.1
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