]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/commit
stmmac: fix lock in stmmac_set_rx_mode
authorGiuseppe CAVALLARO <peppe.cavallaro@st.com>
Tue, 4 Nov 2014 16:08:07 +0000 (17:08 +0100)
committerDavid S. Miller <davem@davemloft.net>
Wed, 5 Nov 2014 21:22:56 +0000 (16:22 -0500)
commitb9d73704aab92602fcadff26f61462a6445bd0cf
treec4fdce909bf102ee486064d2e07199f17a419184
parent758a0ab59b9bed75d8c8fcaed3cb41f10a586793
stmmac: fix lock in stmmac_set_rx_mode

When compile with CONFIG_PROVE_LOCKING the following warnings happen:

[snip]

    HARDIRQ-ON-W at:
                        [<c0480c1c>] _raw_spin_lock+0x3c/0x4c
                        [<c02c2828>] stmmac_set_rx_mode+0x18/0x3c
                        [<c038b2cc>] dev_set_rx_mode+0x1c/0x28
                        [<c038b38c>] __dev_open+0xb4/0xf8
                        [<c038b5a8>] __dev_change_flags+0x94/0x128
                        [<c038b6a8>] dev_change_flags+0x10/0x48
                        [<c062afe0>] ip_auto_config+0x1d4/0x1084
                        [<c000873c>] do_one_initcall+0x108/0x15c
                        [<c060ec50>] kernel_init_freeable+0x1a8/0x248
                        [<c0472cc0>] kernel_init+0x8/0x160
                        [<c000dfc8>] ret_from_fork+0x14/0x2c
     INITIAL USE at:
                       [<c0480c1c>] _raw_spin_lock+0x3c/0x4c
                       [<c02c2828>] stmmac_set_rx_mode+0x18/0x3c
                       [<c038b2cc>] dev_set_rx_mode+0x1c/0x28
                       [<c038b38c>] __dev_open+0xb4/0xf8
                       [<c038b5a8>] __dev_change_flags+0x94/0x128
                       [<c038b6a8>] dev_change_flags+0x10/0x48
                       [<c062afe0>] ip_auto_config+0x1d4/0x1084
                       [<c000873c>] do_one_initcall+0x108/0x15c
                       [<c060ec50>] kernel_init_freeable+0x1a8/0x248
                       [<c0472cc0>] kernel_init+0x8/0x160
                       [<c000dfc8>] ret_from_fork+0x14/0x2c

so the patch just removes the lock protection in the stmmac_set_rx_mode

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Emilio Lopez <emilio@elopez.com.ar>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c