Re: [net-next PATCH] amt: Use BIT macros instead of open codes
From: Paolo Abeni <pabeni@redhat.com>
Date: 2022-05-02 10:12:44
Hello, On Sat, 2022-04-30 at 13:56 +0000, Juhee Kang wrote:
quoted hunk ↗ jump to hunk
Replace open code related to bit operation with BIT macros, which kernel provided. This patch provides no functional change. Signed-off-by: Juhee Kang <redacted> --- drivers/net/amt.c | 2 +- include/net/amt.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)diff --git a/drivers/net/amt.c b/drivers/net/amt.c index 10455c9b9da0..76c1969a03f5 100644 --- a/drivers/net/amt.c +++ b/drivers/net/amt.c@@ -959,7 +959,7 @@ static void amt_req_work(struct work_struct *work) amt_update_gw_status(amt, AMT_STATUS_SENT_REQUEST, true); spin_lock_bh(&amt->lock); out: - exp = min_t(u32, (1 * (1 << amt->req_cnt)), AMT_MAX_REQ_TIMEOUT); + exp = min_t(u32, (1 * BIT(amt->req_cnt)), AMT_MAX_REQ_TIMEOUT); mod_delayed_work(amt_wq, &amt->req_wq, msecs_to_jiffies(exp * 1000)); spin_unlock_bh(&amt->lock); }diff --git a/include/net/amt.h b/include/net/amt.h index 7a4db8b903ee..d2fd76b0a424 100644 --- a/include/net/amt.h +++ b/include/net/amt.h@@ -354,7 +354,7 @@ struct amt_dev { #define AMT_MAX_GROUP 32 #define AMT_MAX_SOURCE 128 #define AMT_HSIZE_SHIFT 8 -#define AMT_HSIZE (1 << AMT_HSIZE_SHIFT) +#define AMT_HSIZE BIT(AMT_HSIZE_SHIFT) #define AMT_DISCOVERY_TIMEOUT 5000 #define AMT_INIT_REQ_TIMEOUT 1
Even if the 2 replaced statements use shift operations, they do not look like bit manipulation: the first one is an exponential timeout, the 2nd one is an (hash) size. I think using the BIT() macro here will be confusing. Cheers, Paolo