net: ethernet: renesas: rswitch: Fix endless loop in error paths

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Coverity reported that the error path in rswitch_gwca_queue_alloc_skb()
has an issue to cause endless loop. So, fix the issue by changing
variables' types from u32 to int. After changed the types,
rswitch_tx_free() should use rswitch_get_num_cur_queues() to
calculate number of current queues.

Reported-by: coverity-bot <keescook+coverity-bot@chromium.org>
Addresses-Coverity-ID: 1527147 ("Control flow issues")
Fixes: 3590918b5d ("net: ethernet: renesas: Add support for "Ethernet Switch"")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20221107081021.2955122-1-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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This commit is contained in:

Yoshihiro Shimoda 2022-11-07 17:10:21 +09:00 • committed by Jakub Kicinski

parent 8e18be7610

commit 380f9acdf7

2 changed files with 12 additions and 11 deletions

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17

drivers/net/ethernet/renesas/rswitch.c

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6

drivers/net/ethernet/renesas/rswitch.h

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