Messages in this thread Patch in this message | | | From | <> | Subject | [PATCH] ethernet: e1000e: define lat_ns as u64 instead of s64 | Date | Fri, 3 Apr 2015 17:17:53 +0800 |
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From: Yanjiang Jin <yanjiang.jin@windriver.com>
do_div() expects the type of "n" to be uint64_t, define "lat_ns" as u64 to avoid the below warning, also update its correlative operations and data.
In file included from ./arch/powerpc/include/asm/div64.h:1:0, from include/linux/kernel.h:124, from include/linux/list.h:8, from include/linux/timer.h:4, from drivers/net/ethernet/intel/e1000e/e1000.h:29, from drivers/net/ethernet/intel/e1000e/ich8lan.c:59: drivers/net/ethernet/intel/e1000e/ich8lan.c: In function 'e1000_platform_pm_pch_lpt': include/asm-generic/div64.h:43:28: warning: comparison of distinct pointer types lacks a cast [enabled by default] (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^ drivers/net/ethernet/intel/e1000e/ich8lan.c:1016:4: note: in expansion of macro 'do_div' do_div(lat_ns, speed);
Signed-off-by: Yanjiang Jin <yanjiang.jin@windriver.com> --- drivers/net/ethernet/intel/e1000e/ich8lan.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c index 48b74a5..baab58b 100644 --- a/drivers/net/ethernet/intel/e1000e/ich8lan.c +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c @@ -982,8 +982,8 @@ static s32 e1000_platform_pm_pch_lpt(struct e1000_hw *hw, bool link) u16 speed, duplex, scale = 0; u16 max_snoop, max_nosnoop; u16 max_ltr_enc; /* max LTR latency encoded */ - s64 lat_ns; /* latency (ns) */ - s64 value; + u64 lat_ns; /* latency (ns) */ + u64 value; u32 rxa; if (!hw->adapter->max_frame_size) { @@ -1008,8 +1008,8 @@ static s32 e1000_platform_pm_pch_lpt(struct e1000_hw *hw, bool link) * 2^25*(2^10-1) ns. The scale is encoded as 0=2^0ns, * 1=2^5ns, 2=2^10ns,...5=2^25ns. */ - lat_ns = ((s64)rxa * 1024 - - (2 * (s64)hw->adapter->max_frame_size)) * 8 * 1000; + lat_ns = ((u64)rxa * 1024 - + (2 * (u64)hw->adapter->max_frame_size)) * 8 * 1000; if (lat_ns < 0) lat_ns = 0; else -- 1.9.1
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