netdev - [PATCH net-next] r8169: use lower_32_bits/upper_32

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <9a7cfc5a-c4e2-f2a9-e256-856d0a69e4de@gmail.com>
Date:   Fri, 19 Mar 2021 09:58:36 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Jakub Kicinski <kuba@...nel.org>,
        David Miller <davem@...emloft.net>,
        Realtek linux nic maintainers <nic_swsd@...ltek.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH net-next] r8169: use lower_32_bits/upper_32_bits macros

Use the lower_32_bits/upper_32_bits macros to simplify the code.

Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
 drivers/net/ethernet/realtek/r8169_main.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index 7aad0ba53..8ea6ddc7d 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -1586,12 +1586,10 @@ DECLARE_RTL_COND(rtl_counters_cond)
 
 static void rtl8169_do_counters(struct rtl8169_private *tp, u32 counter_cmd)
 {
-	dma_addr_t paddr = tp->counters_phys_addr;
-	u32 cmd;
+	u32 cmd = lower_32_bits(tp->counters_phys_addr);
 
-	RTL_W32(tp, CounterAddrHigh, (u64)paddr >> 32);
+	RTL_W32(tp, CounterAddrHigh, upper_32_bits(tp->counters_phys_addr));
 	rtl_pci_commit(tp);
-	cmd = (u64)paddr & DMA_BIT_MASK(32);
 	RTL_W32(tp, CounterAddrLow, cmd);
 	RTL_W32(tp, CounterAddrLow, cmd | counter_cmd);
 
-- 
2.31.0