From mboxrd@z Thu Jan 1 00:00:00 1970 From: arnd@arndb.de (Arnd Bergmann) Date: Wed, 07 Oct 2015 09:59:34 +0200 Subject: [PATCH] NTB: fix 32-bit compiler warning Message-ID: <10263287.Brd9HPYQJD@wuerfel> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org resource_size_t may be 32-bit wide on some architectures, which causes this warning when building the NTB code: drivers/ntb/ntb_transport.c: In function 'ntb_transport_link_work': drivers/ntb/ntb_transport.c:828:46: warning: right shift count >= width of type [-Wshift-count-overflow] The warning is harmless but can be avoided by using the upper_32_bits() macro. Signed-off-by: Arnd Bergmann Fixes: e26a5843f7f5 ("NTB: Split ntb_hw_intel and ntb_transport drivers") --- Found while building ARM allmodconfig diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c index 6e3ee907d186..700f3ae833c2 100644 --- a/drivers/ntb/ntb_transport.c +++ b/drivers/ntb/ntb_transport.c @@ -825,10 +825,10 @@ static void ntb_transport_link_work(struct work_struct *work) size = max_mw_size; spad = MW0_SZ_HIGH + (i * 2); - ntb_peer_spad_write(ndev, spad, (u32)(size >> 32)); + ntb_peer_spad_write(ndev, spad, upper_32_bits(size)); spad = MW0_SZ_LOW + (i * 2); - ntb_peer_spad_write(ndev, spad, (u32)size); + ntb_peer_spad_write(ndev, spad, lower_32_bits(size)); } ntb_peer_spad_write(ndev, NUM_MWS, nt->mw_count);