linux/drivers/hsi, branch v4.6

HSI: ssi-protocol: Use handshake logic from n950

2016-01-28T16:47:56Z

When using the ssi-protocol driver with the Nokia N950, the following error is thrown during modem powered up sequence. [13852.274993] port0: SSI error: 0x01 [13852.279205] ssi-protocol ssi-protocol: RX error detected [13852.284820] ssi-protocol ssi-protocol: Main state: 1 [13852.290069] ssi-protocol ssi-protocol: Recv state: 0 [13852.295288] ssi-protocol ssi-protocol: Send state: 0 [13852.300537] ssi-protocol ssi-protocol: CMT Offline [13852.305603] ssi-protocol ssi-protocol: Wake test 1 [13852.310638] ssi-protocol ssi-protocol: Data RX id: 0 [13852.315887] ssi-protocol ssi-protocol: Data TX id: 0 [13856.001464] ssi-protocol ssi-protocol: Watchdog trigerred [13856.007293] ssi-protocol ssi-protocol: Main state: 1 [13856.012542] ssi-protocol ssi-protocol: Recv state: 0 [13856.017761] ssi-protocol ssi-protocol: Send state: 0 [13856.023010] ssi-protocol ssi-protocol: CMT Offline [13856.028045] ssi-protocol ssi-protocol: Wake test 0 [13856.033111] ssi-protocol ssi-protocol: Data RX id: 0 [13856.038330] ssi-protocol ssi-protocol: Data TX id: 0 This patch fixes the issue by using the handshake setup from the Nokia N950 kernel. The new handshake sequence also works with the N900, so there is no need to differentiate between both modems. Tested-by: Aaro Koskinen Signed-off-by: Sebastian Reichel

HSI: nokia-modem: add n950 and n9 support

2016-01-28T16:46:08Z

The Nokia N950 and Nokia N9 also have a SSI connected modem, which use the same protocols as the Nokia N900, but with increased link speed (96000 kbps instead of 55000 kbps) and with less GPIOs. Since it's unclear, if the N950 and the N9 use exactly the same modem, each of them gets their own compatible string. Acked-by: Rob Herring Tested-by: Aaro Koskinen Signed-off-by: Sebastian Reichel

HSI: omap_ssi_port: fix handling of_get_named_gpio result

2016-01-07T15:07:54Z

The function can return negative value. The problem has been detected using proposed semantic patch scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1]. [1]: http://permalink.gmane.org/gmane.linux.kernel/2038576 Signed-off-by: Andrzej Hajda Signed-off-by: Sebastian Reichel

HSI: omap_ssi: fix handling ida_simple_get result

2016-01-07T15:06:22Z

hsi: controllers:remove redundant code

2015-10-30T15:10:40Z

Use devm_ioremap_resource() in order to make the code simpler, and remove redundant return value check of platform_get_resource() because this value is alreadytaken care by devm_ioremap_resource() Signed-off-by: Sanjeev Sharma Signed-off-by: Sebastian Reichel

hsi: correctly handle return value of kzalloc

2015-10-19T09:42:02Z

Since kzalloc can be failed in memory pressure, its return value should be checked and handled. Signed-off-by: Insu Yun Signed-off-by: Sebastian Reichel

hsi: omap_ssi_port: Prevent warning if cawake_gpio is not defined.

2015-10-14T11:24:44Z

The error handling path is broken as cawake_gpio was defined as unsigned integer causing the following warnings on boards that don't use SSI port and so don't have cawake_gpio defined. e.g. beagleboard C4. [ 30.094635] WARNING: CPU: 0 PID: 322 at drivers/gpio/gpiolib.c:86 gpio_to_desc+0xa4/0xb8() [ 30.103363] invalid GPIO -2 [ 30.106292] Modules linked in: omap_ssi_port(+) cpufreq_dt cfbfillrect cfbimgblt leds_gpio cfbcopyarea thermal_sys led_class hwmon gpio_keys encoder_tfp410 connector_analog_tv connector_dvi omap_hdq snd phy_i [ 30.145477] CPU: 0 PID: 322 Comm: modprobe Not tainted 4.3.0-rc4-00030-gca978c0-dirty #335 [ 30.154174] Hardware name: Generic OMAP3-GP (Flattened Device Tree) [ 30.160827] [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [ 30.168975] [] (show_stack) from [] (dump_stack+0x80/0x9c) [ 30.176635] [] (dump_stack) from [] (warn_slowpath_common+0x7c/0xb8) [ 30.185180] [] (warn_slowpath_common) from [] (warn_slowpath_fmt+0x30/0x40) [ 30.194366] [] (warn_slowpath_fmt) from [] (gpio_to_desc+0xa4/0xb8) [ 30.202819] [] (gpio_to_desc) from [] (gpio_request_one+0x14/0x11c) [ 30.211273] [] (gpio_request_one) from [] (devm_gpio_request_one+0x3c/0x78) [ 30.220458] [] (devm_gpio_request_one) from [] (ssi_port_probe+0x118/0x504 [omap_ssi_port]) [ 30.231170] [] (ssi_port_probe [omap_ssi_port]) from [] (platform_drv_probe+0x48/0xa4) [ 30.241424] [] (platform_drv_probe) from [] (driver_probe_device+0x1dc/0x2a0) [ 30.250793] [] (driver_probe_device) from [] (__driver_attach+0x94/0x98) [ 30.259643] [] (__driver_attach) from [] (bus_for_each_dev+0x54/0x88) [ 30.268249] [] (bus_for_each_dev) from [] (bus_add_driver+0xe8/0x1f8) [ 30.276916] [] (bus_add_driver) from [] (driver_register+0x78/0xf4) [ 30.285369] [] (driver_register) from [] (__platform_driver_probe+0x34/0xd8) [ 30.294647] [] (__platform_driver_probe) from [] (do_one_initcall+0x80/0x1d8) [ 30.303985] [] (do_one_initcall) from [] (do_init_module+0x5c/0x1cc) [ 30.312561] [] (do_init_module) from [] (load_module+0x18c8/0x1f0c) [ 30.320983] [] (load_module) from [] (SyS_init_module+0xdc/0x150) [ 30.329223] [] (SyS_init_module) from [] (ret_fast_syscall+0x0/0x1c) Fixes: b209e047bc743 ("HSI: Introduce OMAP SSI driver") Signed-off-by: Roger Quadros Signed-off-by: Sebastian Reichel

hsi: fix double kfree

2015-10-14T11:22:00Z

When device_register() fails, kfree() is called in hsi_client_release(), hence there is no need to call kfree in err3 again. Fixes: a2aa24734d9db ("HSI: Add common DT binding for HSI client devices") Signed-off-by: Geliang Tang Signed-off-by: Sebastian Reichel

HSI: Fix a typo

2015-09-18T21:02:08Z

Signed-off-by: Jakub Wilk Signed-off-by: Sebastian Reichel

mm: mark most vm_operations_struct const

2015-09-10T20:29:01Z

With two exceptions (drm/qxl and drm/radeon) all vm_operations_struct structs should be constant. Signed-off-by: Kirill A. Shutemov Reviewed-by: Oleg Nesterov Cc: "H. Peter Anvin" Cc: Andy Lutomirski Cc: Dave Hansen Cc: Ingo Molnar Cc: Minchan Kim Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds