kernel/linux.git/drivers/net/usb/hso.c, branch linux-4.16.y

net: usb: hso.c: remove unneeded DRIVER_LICENSE #define

2017-11-18T01:37:00+00:00

There is no need to #define the license of the driver, just put it in the MODULE_LICENSE() line directly as a text string. This allows tools that check that the module license matches the source code license to work properly, as there is no need to unwind the unneeded dereference. Cc: "David S. Miller" Cc: Andreas Kemnade Cc: Johan Hovold Reported-by: Philippe Ombredanne Signed-off-by: Greg Kroah-Hartman Reviewed-by: Philippe Ombredanne Signed-off-by: David S. Miller

net: hso: remove redundant unused variable dev

2017-11-01T12:23:56+00:00

The pointer dev is being assigned but is never used, hence it is redundant and can be removed. Cleans up clang warning: drivers/net/usb/hso.c:2280:2: warning: Value stored to 'dev' is never read Signed-off-by: Colin Ian King Reviewed-by: Johan Hovold Signed-off-by: David S. Miller

net: manual clean code which call skb_put_[data:zero]

2017-06-20T17:30:15+00:00

Signed-off-by: yuan linyu Signed-off-by: David S. Miller

networking: introduce and use skb_put_data()

2017-06-16T15:48:37+00:00

A common pattern with skb_put() is to just want to memcpy() some data into the new space, introduce skb_put_data() for this. An spatch similar to the one for skb_put_zero() converts many of the places using it: @@ identifier p, p2; expression len, skb, data; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_data(skb, data, len); | -p = (t)skb_put(skb, len); +p = skb_put_data(skb, data, len); ) ( p2 = (t2)p; -memcpy(p2, data, len); | -memcpy(p, data, len); ) @@ type t, t2; identifier p, p2; expression skb, data; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); ) ( p2 = (t2)p; -memcpy(p2, data, sizeof(*p)); | -memcpy(p, data, sizeof(*p)); ) @@ expression skb, len, data; @@ -memcpy(skb_put(skb, len), data, len); +skb_put_data(skb, data, len); (again, manually post-processed to retain some comments) Reviewed-by: Stephen Hemminger Signed-off-by: Johannes Berg Signed-off-by: David S. Miller

net: hso: register netdev later to avoid a race condition

2017-04-28T20:11:48+00:00

If the netdev is accessed before the urbs are initialized, there will be NULL pointer dereferences. That is avoided by registering it when it is fully initialized. This case occurs e.g. if dhcpcd is running in the background and the device is probed, either after insmod hso or when the device appears on the usb bus. A backtrace is the following: [ 1357.356048] usb 1-2: new high-speed USB device number 12 using ehci-omap [ 1357.551177] usb 1-2: New USB device found, idVendor=0af0, idProduct=8800 [ 1357.558654] usb 1-2: New USB device strings: Mfr=3, Product=2, SerialNumber=0 [ 1357.568572] usb 1-2: Product: Globetrotter HSUPA Modem [ 1357.574096] usb 1-2: Manufacturer: Option N.V. [ 1357.685882] hso 1-2:1.5: Not our interface [ 1460.886352] hso: unloaded [ 1460.889984] usbcore: deregistering interface driver hso [ 1513.769134] hso: ../drivers/net/usb/hso.c: Option Wireless [ 1513.846771] Unable to handle kernel NULL pointer dereference at virtual address 00000030 [ 1513.887664] hso 1-2:1.5: Not our interface [ 1513.906890] usbcore: registered new interface driver hso [ 1513.937988] pgd = ecdec000 [ 1513.949890] [00000030] *pgd=acd15831, *pte=00000000, *ppte=00000000 [ 1513.956573] Internal error: Oops: 817 [#1] PREEMPT SMP ARM [ 1513.962371] Modules linked in: hso usb_f_ecm omap2430 bnep bluetooth g_ether usb_f_rndis u_ether libcomposite configfs ipv6 arc4 wl18xx wlcore mac80211 cfg80211 bq27xxx_battery panel_tpo_td028ttec1 omapdrm drm_kms_helper cfbfillrect snd_soc_simple_card syscopyarea cfbimgblt snd_soc_simple_card_utils sysfillrect sysimgblt fb_sys_fops snd_soc_omap_twl4030 cfbcopyarea encoder_opa362 drm twl4030_madc_hwmon wwan_on_off snd_soc_gtm601 pwm_omap_dmtimer generic_adc_battery connector_analog_tv pwm_bl extcon_gpio omap3_isp wlcore_sdio videobuf2_dma_contig videobuf2_memops w1_bq27000 videobuf2_v4l2 videobuf2_core omap_hdq snd_soc_omap_mcbsp ov9650 snd_soc_omap bmp280_i2c bmg160_i2c v4l2_common snd_pcm_dmaengine bmp280 bmg160_core at24 bmc150_magn_i2c nvmem_core videodev phy_twl4030_usb bmc150_accel_i2c tsc2007 [ 1514.037384] bmc150_magn bmc150_accel_core media leds_tca6507 bno055 industrialio_triggered_buffer kfifo_buf gpio_twl4030 musb_hdrc snd_soc_twl4030 twl4030_vibra twl4030_madc twl4030_pwrbutton twl4030_charger industrialio w2sg0004 ehci_omap omapdss [last unloaded: hso] [ 1514.062622] CPU: 0 PID: 3433 Comm: dhcpcd Tainted: G W 4.11.0-rc8-letux+ #1 [ 1514.071136] Hardware name: Generic OMAP36xx (Flattened Device Tree) [ 1514.077758] task: ee748240 task.stack: ecdd6000 [ 1514.082580] PC is at hso_start_net_device+0x50/0xc0 [hso] [ 1514.088287] LR is at hso_net_open+0x68/0x84 [hso] [ 1514.093231] pc : [] lr : [] psr: a00f0013 sp : ecdd7e20 ip : 00000000 fp : ffffffff [ 1514.105316] r10: 00000000 r9 : ed0e080c r8 : ecd8fe2c [ 1514.110839] r7 : bf79cef4 r6 : ecd8fe00 r5 : 00000000 r4 : ed0dbd80 [ 1514.117706] r3 : 00000000 r2 : c0020c80 r1 : 00000000 r0 : ecdb7800 [ 1514.124572] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none [ 1514.132110] Control: 10c5387d Table: acdec019 DAC: 00000051 [ 1514.138153] Process dhcpcd (pid: 3433, stack limit = 0xecdd6218) [ 1514.144470] Stack: (0xecdd7e20 to 0xecdd8000) [ 1514.149078] 7e20: ed0dbd80 ecd8fe98 00000001 00000000 ecd8f800 ecd8fe00 ecd8fe60 00000000 [ 1514.157714] 7e40: ed0e080c bf79ced8 bf79ce70 ecd8f800 00000001 bf7a0258 ecd8f830 c068d958 [ 1514.166320] 7e60: c068d8b8 ecd8f800 00000001 00001091 00001090 c068dba4 ecd8f800 00001090 [ 1514.174926] 7e80: ecd8f940 ecd8f800 00000000 c068dc60 00000000 00000001 ed0e0800 ecd8f800 [ 1514.183563] 7ea0: 00000000 c06feaa8 c0ca39c2 beea57dc 00000020 00000000 306f7368 00000000 [ 1514.192169] 7ec0: 00000000 00000000 00001091 00000000 00000000 00000000 00000000 00008914 [ 1514.200805] 7ee0: eaa9ab60 beea57dc c0c9bfc0 eaa9ab40 00000006 00000000 00046858 c066a948 [ 1514.209411] 7f00: beea57dc eaa9ab60 ecc6b0c0 c02837b0 00000006 c0282c90 0000c000 c0283654 [ 1514.218017] 7f20: c09b0c00 c098bc31 00000001 c0c5e513 c0c5e513 00000000 c0151354 c01a20c0 [ 1514.226654] 7f40: c0c5e513 c01a3134 ecdd6000 c01a3160 ee7487f0 600f0013 00000000 ee748240 [ 1514.235260] 7f60: ee748734 00000000 ecc6b0c0 ecc6b0c0 beea57dc 00008914 00000006 00000000 [ 1514.243896] 7f80: 00046858 c02837b0 00001091 0003a1f0 00046608 0003a248 00000036 c01071e4 [ 1514.252502] 7fa0: ecdd6000 c0107040 0003a1f0 00046608 00000006 00008914 beea57dc 00001091 [ 1514.261108] 7fc0: 0003a1f0 00046608 0003a248 00000036 0003ac0c 00046608 00046610 00046858 [ 1514.269744] 7fe0: 0003a0ac beea57d4 000167eb b6f23106 400f0030 00000006 00000000 00000000 [ 1514.278411] [] (hso_start_net_device [hso]) from [] (hso_net_open+0x68/0x84 [hso]) [ 1514.288238] [] (hso_net_open [hso]) from [] (__dev_open+0xa0/0xf4) [ 1514.296600] [] (__dev_open) from [] (__dev_change_flags+0x8c/0x130) [ 1514.305023] [] (__dev_change_flags) from [] (dev_change_flags+0x18/0x48) [ 1514.313934] [] (dev_change_flags) from [] (devinet_ioctl+0x348/0x714) [ 1514.322540] [] (devinet_ioctl) from [] (sock_ioctl+0x2b0/0x308) [ 1514.330627] [] (sock_ioctl) from [] (vfs_ioctl+0x20/0x34) [ 1514.338165] [] (vfs_ioctl) from [] (do_vfs_ioctl+0x82c/0x93c) [ 1514.346038] [] (do_vfs_ioctl) from [] (SyS_ioctl+0x4c/0x74) [ 1514.353759] [] (SyS_ioctl) from [] (ret_fast_syscall+0x0/0x1c) [ 1514.361755] Code: e3822103 e3822080 e1822781 e5981014 (e5832030) [ 1514.510833] ---[ end trace dfb3e53c657f34a0 ]--- Reported-by: H. Nikolaus Schaller Signed-off-by: Andreas Kemnade Reviewed-by: Johan Hovold Signed-off-by: David S. Miller

net: hso: fix module unloading

2017-04-25T15:52:07+00:00

keep tty driver until usb driver is unregistered rmmod hso produces traces like this without that: [40261.645904] usb 2-2: new high-speed USB device number 2 using ehci-omap [40261.854644] usb 2-2: New USB device found, idVendor=0af0, idProduct=8800 [40261.862609] usb 2-2: New USB device strings: Mfr=3, Product=2, SerialNumber=0 [40261.872772] usb 2-2: Product: Globetrotter HSUPA Modem [40261.880279] usb 2-2: Manufacturer: Option N.V. [40262.021270] hso 2-2:1.5: Not our interface [40265.556945] hso: unloaded [40265.559875] usbcore: deregistering interface driver hso [40265.595947] Unable to handle kernel NULL pointer dereference at virtual address 00000033 [40265.604522] pgd = ecb14000 [40265.611877] [00000033] *pgd=00000000 [40265.617034] Internal error: Oops: 5 [#1] PREEMPT SMP ARM [40265.622650] Modules linked in: hso(-) bnep bluetooth ipv6 arc4 twl4030_madc_hwmon wl18xx wlcore mac80211 cfg80211 snd_soc_simple_card snd_soc_simple_card_utils snd_soc_omap_twl4030 snd_soc_gtm601 generic_adc_battery extcon_gpio omap3_isp videobuf2_dma_contig videobuf2_memops wlcore_sdio videobuf2_v4l2 videobuf2_core ov9650 bmp280_i2c v4l2_common bmp280 bmg160_i2c bmg160_core at24 nvmem_core videodev bmc150_accel_i2c bmc150_magn_i2c media bmc150_accel_core tsc2007 bmc150_magn leds_tca6507 bno055 snd_soc_omap_mcbsp industrialio_triggered_buffer snd_soc_omap kfifo_buf snd_pcm_dmaengine gpio_twl4030 snd_soc_twl4030 twl4030_vibra twl4030_madc wwan_on_off ehci_omap pwm_bl pwm_omap_dmtimer panel_tpo_td028ttec1 encoder_opa362 connector_analog_tv omapdrm drm_kms_helper cfbfillrect syscopyarea cfbimgblt sysfillrect [40265.698211] sysimgblt fb_sys_fops cfbcopyarea drm omapdss usb_f_ecm g_ether usb_f_rndis u_ether libcomposite configfs omap2430 phy_twl4030_usb musb_hdrc twl4030_charger industrialio w2sg0004 twl4030_pwrbutton bq27xxx_battery w1_bq27000 omap_hdq [last unloaded: hso] [40265.723175] CPU: 0 PID: 2701 Comm: rmmod Not tainted 4.11.0-rc6-letux+ #6 [40265.730346] Hardware name: Generic OMAP36xx (Flattened Device Tree) [40265.736938] task: ecb81100 task.stack: ecb82000 [40265.741729] PC is at cdev_del+0xc/0x2c [40265.745666] LR is at tty_unregister_device+0x40/0x50 [40265.750915] pc : [] lr : [] psr: 600b0113 sp : ecb83ea8 ip : eca4f898 fp : 00000000 [40265.763000] r10: 00000000 r9 : 00000000 r8 : 00000001 [40265.768493] r7 : eca4f800 r6 : 00000003 r5 : 00000000 r4 : ffffffff [40265.775360] r3 : c1458d54 r2 : 00000000 r1 : 00000004 r0 : ffffffff [40265.782257] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none [40265.789764] Control: 10c5387d Table: acb14019 DAC: 00000051 [40265.795806] Process rmmod (pid: 2701, stack limit = 0xecb82218) [40265.802062] Stack: (0xecb83ea8 to 0xecb84000) [40265.806640] 3ea0: ec9e8100 c04b3ecc bf737378 ed5b7c00 00000003 bf7327ec [40265.815277] 3ec0: eca4f800 00000000 ec9fd800 eca4f800 bf737070 bf7328bc eca4f820 c05a9a04 [40265.823883] 3ee0: eca4f820 00000000 00000001 eca4f820 ec9fd870 bf737070 eca4f854 ec9fd8a4 [40265.832519] 3f00: ecb82000 00000000 00000000 c04e6960 eca4f820 bf737070 bf737048 00000081 [40265.841125] 3f20: c01071e4 c04e6a60 ecb81100 bf737070 bf737070 c04e5d94 bf737020 c05a8f88 [40265.849731] 3f40: bf737100 00000800 7f5fa254 00000081 c01071e4 c01c4afc 00000000 006f7368 [40265.858367] 3f60: ecb815f4 00000000 c0cac9c4 c01071e4 ecb82000 00000000 00000000 c01512f4 [40265.866973] 3f80: ed5b3200 c01071e4 7f5fa220 7f5fa220 bea78ec9 0010711c 7f5fa220 7f5fa220 [40265.875579] 3fa0: bea78ec9 c0107040 7f5fa220 7f5fa220 7f5fa254 00000800 dd35b800 dd35b800 [40265.884216] 3fc0: 7f5fa220 7f5fa220 bea78ec9 00000081 bea78dcc 00000000 bea78bd8 00000000 [40265.892822] 3fe0: b6f70521 bea78b6c 7f5dd613 b6f70526 80070030 7f5fa254 ffffffff ffffffff [40265.901458] [] (cdev_del) from [] (tty_unregister_device+0x40/0x50) [40265.909942] [] (tty_unregister_device) from [] (hso_free_interface+0x80/0x144 [hso]) [40265.919982] [] (hso_free_interface [hso]) from [] (hso_disconnect+0xc/0x18 [hso]) [40265.929718] [] (hso_disconnect [hso]) from [] (usb_unbind_interface+0x84/0x200) [40265.939239] [] (usb_unbind_interface) from [] (device_release_driver_internal+0x138/0x1cc) [40265.949798] [] (device_release_driver_internal) from [] (driver_detach+0x60/0x6c) [40265.959503] [] (driver_detach) from [] (bus_remove_driver+0x64/0x8c) [40265.968017] [] (bus_remove_driver) from [] (usb_deregister+0x5c/0xb8) [40265.976654] [] (usb_deregister) from [] (SyS_delete_module+0x160/0x1dc) [40265.985443] [] (SyS_delete_module) from [] (ret_fast_syscall+0x0/0x1c) [40265.994171] Code: c1458d54 e59f3020 e92d4010 e1a04000 (e5941034) [40266.016693] ---[ end trace 9d5ac43c7e41075c ]--- Signed-off-by: Andreas Kemnade Reviewed-by: Johan Hovold Signed-off-by: David S. Miller

sched/headers: Prepare to move signal wakeup & sigpending methods from into

2017-03-02T07:42:32+00:00

Fix up affected files that include this signal functionality via sched.h. Acked-by: Linus Torvalds Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

hso: Convert printk to pr_

2016-09-06T20:29:51+00:00

Use a more common logging style Miscellanea: o Add pr_fmt to prefix each output message o Realign arguments Signed-off-by: Joe Perches Signed-off-by: David S. Miller

hso: Use a more common logging style

2016-09-06T20:29:51+00:00

Macros that end in an underscore are just odd. Add hso_dbg(level, fmt, ...) and use it everwhere instead. Several uses had additional unnecessary newlines as the macro added a newline. Remove the newline from the macro and add newlines to each use as appropriate. Remove now unused D macros. Signed-off-by: Joe Perches Signed-off-by: David S. Miller

net: usb: hso: don't print error when allocating urb fails

2016-08-13T21:53:39+00:00

kmalloc will print enough information in case of failure. Signed-off-by: Wolfram Sang Signed-off-by: David S. Miller