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The LITMUS^RT kernel.

Bjoern Brandenburg

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author	Linus Torvalds <torvalds@g5.osdl.org>	2006-08-02 23:17:49 -0400
committer	Linus Torvalds <torvalds@g5.osdl.org>	2006-08-02 23:17:49 -0400
commit	ae74c3b69a08e1de20cb681ec959f3a48af0006a (patch)
tree	97def06a79fdaee2294ef197666a369b18728058 /net/ipv6/tcp_ipv6.c
parent	202668ecb6cb221460d884598dd4cd2e1f3292f3 (diff)

Fix force_sig_info() semantics after cleanups

Suresh points out that commit b0423a0d9cc836b2c3d796623cd19236bfedfe63 broke the semantics of a synchronous signal like SIGSEGV occurring recursively inside its own handler handler (or, indeed, any other context when the signal was blocked). That was unintentional, and this fixes things up by reinstating the old semantics, but without reverting the cleanups. Cc: Paul E. McKenney <paulmck@us.ibm.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Diffstat (limited to 'net/ipv6/tcp_ipv6.c')

0 files changed, 0 insertions, 0 deletions

clk); gpiod_set_value_cansleep(rfkill->shutdown_gpio, !blocked); gpiod_set_value_cansleep(rfkill->reset_gpio, !blocked); if (blocked && !IS_ERR(rfkill->clk) && rfkill->clk_enabled) clk_disable(rfkill->clk); rfkill->clk_enabled = !blocked; return 0; } static const struct rfkill_ops rfkill_gpio_ops = { .set_block = rfkill_gpio_set_power, }; static const struct acpi_gpio_params reset_gpios = { 0, 0, false }; static const struct acpi_gpio_params shutdown_gpios = { 1, 0, false }; static const struct acpi_gpio_mapping acpi_rfkill_default_gpios[] = { { "reset-gpios", &reset_gpios, 1 }, { "shutdown-gpios", &shutdown_gpios, 1 }, { }, }; static int rfkill_gpio_acpi_probe(struct device *dev, struct rfkill_gpio_data *rfkill) { const struct acpi_device_id *id; id = acpi_match_device(dev->driver->acpi_match_table, dev); if (!id) return -ENODEV; rfkill->type = (unsigned)id->driver_data; return devm_acpi_dev_add_driver_gpios(dev, acpi_rfkill_default_gpios); } static int rfkill_gpio_probe(struct platform_device *pdev) { struct rfkill_gpio_data *rfkill; struct gpio_desc *gpio; const char *type_name; int ret; rfkill = devm_kzalloc(&pdev->dev, sizeof(*rfkill), GFP_KERNEL); if (!rfkill) return -ENOMEM; device_property_read_string(&pdev->dev, "name", &rfkill->name); device_property_read_string(&pdev->dev, "type", &type_name); if (!rfkill->name) rfkill->name = dev_name(&pdev->dev); rfkill->type = rfkill_find_type(type_name); if (ACPI_HANDLE(&pdev->dev)) { ret = rfkill_gpio_acpi_probe(&pdev->dev, rfkill); if (ret) return ret; } rfkill->clk = devm_clk_get(&pdev->dev, NULL); gpio = devm_gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(gpio)) return PTR_ERR(gpio); rfkill->reset_gpio = gpio; gpio = devm_gpiod_get_optional(&pdev->dev, "shutdown", GPIOD_OUT_LOW); if (IS_ERR(gpio)) return PTR_ERR(gpio); rfkill->shutdown_gpio = gpio; /* Make sure at-least one GPIO is defined for this instance */ if (!rfkill->reset_gpio && !rfkill->shutdown_gpio) { dev_err(&pdev->dev, "invalid platform data\n"); return -EINVAL; } rfkill->rfkill_dev = rfkill_alloc(rfkill->name, &pdev->dev, rfkill->type, &rfkill_gpio_ops, rfkill); if (!rfkill->rfkill_dev) return -ENOMEM; ret = rfkill_register(rfkill->rfkill_dev); if (ret < 0) goto err_destroy; platform_set_drvdata(pdev, rfkill); dev_info(&pdev->dev, "%s device registered.\n", rfkill->name); return 0; err_destroy: rfkill_destroy(rfkill->rfkill_dev); return ret; } static int rfkill_gpio_remove(struct platform_device *pdev) { struct rfkill_gpio_data *rfkill = platform_get_drvdata(pdev); rfkill_unregister(rfkill->rfkill_dev); rfkill_destroy(rfkill->rfkill_dev); return 0; } #ifdef CONFIG_ACPI static const struct acpi_device_id rfkill_acpi_match[] = { { "BCM4752", RFKILL_TYPE_GPS }, { "LNV4752", RFKILL_TYPE_GPS }, { }, }; MODULE_DEVICE_TABLE(acpi, rfkill_acpi_match); #endif static struct platform_driver rfkill_gpio_driver = { .probe = rfkill_gpio_probe, .remove = rfkill_gpio_remove, .driver = { .name = "rfkill_gpio", .acpi_match_table = ACPI_PTR(rfkill_acpi_match), }, }; module_platform_driver(rfkill_gpio_driver); MODULE_DESCRIPTION("gpio rfkill"); MODULE_AUTHOR("NVIDIA"); MODULE_LICENSE("GPL");