From: Haowen Bai <baihaowen@meizu.com>
Date: Mon, 11 Apr 2022 09:32:37 +0800
Subject: sfc: ef10: Fix assigning negative value to unsigned variable
Patch-mainline: v5.19-rc1
Git-commit: b8ff3395fbdf3b79a99d0ef410fc34c51044121e
References: jsc#PED-1565
fix warning reported by smatch:
251 drivers/net/ethernet/sfc/ef10.c:2259 efx_ef10_tx_tso_desc()
warn: assigning (-208) to unsigned variable 'ip_tot_len'
Signed-off-by: Haowen Bai <baihaowen@meizu.com>
Acked-by: Edward Cree <ecree.xilinx@gmail.com>
Link: https://lore.kernel.org/r/1649640757-30041-1-git-send-email-baihaowen@meizu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/sfc/ef10.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -2256,7 +2256,7 @@ int efx_ef10_tx_tso_desc(struct efx_tx_q
* guaranteed to satisfy the second as we only attempt TSO if
* inner_network_header <= 208.
*/
- ip_tot_len = -EFX_TSO2_MAX_HDRLEN;
+ ip_tot_len = 0x10000 - EFX_TSO2_MAX_HDRLEN;
EFX_WARN_ON_ONCE_PARANOID(mss + EFX_TSO2_MAX_HDRLEN +
(tcp->doff << 2u) > ip_tot_len);