From: Fabio Estevam Date: Thu, 6 Jun 2013 20:41:57 +0000 (-0300) Subject: linux-imx (2.6.35.3): Disable NAPI X-Git-Tag: 2.1~1356 X-Git-Url: https://code.ossystems.io/gitweb?a=commitdiff_plain;h=44b4e9c1c440a64da658a850e4c5716bf186ba44;p=meta-freescale.git linux-imx (2.6.35.3): Disable NAPI commit 0a9469a14c5 (linux-imx (2.6.35.3): Enable FEC_NAPI in the MX5 defconfig) enabled NAPI support on mx5 defconfig and causes the following kernel crash: Starting advanced power management daemon: kernel BUG at include/linux/netdevice.h:462! Unable to handle kernel NULL pointer dereference at virtual address 00000000 apmd. apmd[1613]: apmd 3.2.1 interfacimxc_ipu mxc_ipu: Channel already disabled 9 mxc_ipu mxc_ipu: Channel already uninitialized 9 ng with apm driver 1.13 and APM BIOS 1.2 pgd = df79c000 [00000000] *pgd=cf598031, *pte=00000000, *ppte=00000000 Internal error: Oops: 817 [#1] PREEMPT last sysfs file: /sys/devices/platform/mxc_sdc_fb.1/graphics/fb0/mode Modules linked in: CPU: 0 Not tainted (2.6.35.3-maintain+yocto+g2796ca6 #1) PC is at __bug+0x1c/0x28 LR is at __bug+0x18/0x28 pc : [<80035c28>] lr : [<80035c24>] psr: 600f0013 sp : df635e38 ip : e08fe000 fp : 00008914 r10: 7ebf48e0 r9 : 00000000 r8 : 00000001 r7 : 00009002 r6 : 00000001 r5 : 8045406c r4 : df011000 r3 : 00000000 r2 : df635e2c r1 : 807a3d2b r0 : 00000033 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 10c5387d Table: cf79c019 DAC: 00000015 Process connmand (pid: 1589, stack limit = 0xdf6342e8) Stack: (0xdf635e38 to 0xdf636000) 5e20: 00000000 802a833c 5e40: df011000 000000e2 df011000 8045406c 00000001 00009002 00000001 00000000 5e60: 7ebf48e0 80376224 803761a8 df011000 ffff9003 80376464 00008914 df011000 5e80: 00009002 df422000 df011000 80376554 00000000 df42200c df422000 803b8438 5ea0: df634000 00000000 30687465 00000000 00000000 00000000 00009003 00000000 5ec0: 00000000 00000000 00000000 00008914 803639d4 7ebf48e0 808cdebc 80033004 5ee0: df634000 00093250 7ebf48e0 80363be0 0000c000 df561000 803639d4 7ebf48e0 5f00: 00008914 800d5c78 0000c000 7ebf48e0 df561000 00008914 0000000d 800d66d8 5f20: 00000003 80712c08 808cdce8 df634000 00093250 800c964c 00000000 0000000d 5f40: de289c00 df635f84 00080000 803641ec df634000 df052800 de28e800 00000000 5f60: 00000000 7ebf48e0 df561000 00008914 0000000d 80033004 df634000 00093250 5f80: 7ebf4cf4 800d6760 0000000d 00000000 7ebf48e0 0000000d 00000000 00000001 5fa0: 00000036 80032e80 0000000d 00000000 0000000d 00008914 7ebf48e0 00009002 5fc0: 0000000d 00000000 00000001 00000036 00000000 000001bc 00093250 7ebf4cf4 5fe0: 0008e5ac 7ebf48dc 00053ef4 4d196fec 600f0010 0000000d 00000000 00000000 [<80035c28>] (__bug+0x1c/0x28) from [<802a833c>] (fec_enet_open+0x2c/0x25c) [<802a833c>] (fec_enet_open+0x2c/0x25c) from [<80376224>] (__dev_open+0x7c/0xfc) [<80376224>] (__dev_open+0x7c/0xfc) from [<80376464>] (__dev_change_flags+0x8c/0x110) [<80376464>] (__dev_change_flags+0x8c/0x110) from [<80376554>] (dev_change_flags+0x10/0x44) [<80376554>] (dev_change_flags+0x10/0x44) from [<803b8438>] (devinet_ioctl+0x298/0x694) [<803b8438>] (devinet_ioctl+0x298/0x694) from [<80363be0>] (sock_ioctl+0x20c/0x25c) [<80363be0>] (sock_ioctl+0x20c/0x25c) from [<800d5c78>] (vfs_ioctl+0x2c/0xac) [<800d5c78>] (vfs_ioctl+0x2c/0xac) from [<800d66d8>] (do_vfs_ioctl+0x514/0x56c) [<800d66d8>] (do_vfs_ioctl+0x514/0x56c) from [<800d6760>] (sys_ioctl+0x30/0x58) [<800d6760>] (sys_ioctl+0x30/0x58) from [<80032e80>] (ret_fast_syscall+0x0/0x30) Code: e59f0010 e1a01003 eb0fb87b e3a03000 (e5833000) ---[ end trace 1602d2bf9360375c ]--- Disable CONFIG_FEC_NAPI option so that we can have FEC functional again. Signed-off-by: Fabio Estevam --- diff --git a/meta-fsl-arm/recipes-kernel/linux/linux-imx-2.6.35.3/mx5/defconfig b/meta-fsl-arm/recipes-kernel/linux/linux-imx-2.6.35.3/mx5/defconfig index a4fd20f7..c2a11cb5 100644 --- a/meta-fsl-arm/recipes-kernel/linux/linux-imx-2.6.35.3/mx5/defconfig +++ b/meta-fsl-arm/recipes-kernel/linux/linux-imx-2.6.35.3/mx5/defconfig @@ -874,7 +874,6 @@ CONFIG_SMSC911X=y # CONFIG_KS8851 is not set # CONFIG_KS8851_MLL is not set CONFIG_FEC=y -CONFIG_FEC_NAPI=y # CONFIG_FEC_1588 is not set # CONFIG_FEC2 is not set # CONFIG_NETDEV_1000 is not set