/* * Driver for ADAU1361/ADAU1461/ADAU1761/ADAU1961 codec * * Copyright 2014 Analog Devices Inc. * Author: Lars-Peter Clausen * * Licensed under the GPL-2. */ #include #include #include #include #include #include "adau1761.h" static void adau1761_spi_switch_mode(struct device *dev) { struct spi_device *spi = to_spi_device(dev); /* * To get the device into SPI mode CLATCH has to be pulled low three * times. Do this by issuing three dummy reads. */ spi_w8r8(spi, 0x00); spi_w8r8(spi, 0x00); spi_w8r8(spi, 0x00); } static int adau1761_spi_probe(struct spi_device *spi) { const struct spi_device_id *id = spi_get_device_id(spi); struct regmap_config config; if (!id) return -EINVAL; config = adau1761_regmap_config; config.val_bits = 8; config.reg_bits = 24; config.read_flag_mask = 0x1; return adau1761_probe(&spi->dev, devm_regmap_init_spi(spi, &config), id->driver_data, adau1761_spi_switch_mode); } static int adau1761_spi_remove(struct spi_device *spi) { adau17x1_remove(&spi->dev); return 0; } static const struct spi_device_id adau1761_spi_id[] = { { "adau1361", ADAU1361 }, { "adau1461", ADAU1761 }, { "adau1761", ADAU1761 }, { "adau1961", ADAU1361 }, { } }; MODULE_DEVICE_TABLE(spi, adau1761_spi_id); #if defined(CONFIG_OF) static const struct of_device_id adau1761_spi_dt_ids[] = { { .compatible = "adi,adau1361", }, { .compatible = "adi,adau1461", }, { .compatible = "adi,adau1761", }, { .compatible = "adi,adau1961", }, { }, }; MODULE_DEVICE_TABLE(of, adau1761_spi_dt_ids); #endif static struct spi_driver adau1761_spi_driver = { .driver = { .name = "adau1761", .of_match_table = of_match_ptr(adau1761_spi_dt_ids), }, .probe = adau1761_spi_probe, .remove = adau1761_spi_remove, .id_table = adau1761_spi_id, }; module_spi_driver(adau1761_spi_driver); MODULE_DESCRIPTION("ASoC ADAU1361/ADAU1461/ADAU1761/ADAU1961 CODEC SPI driver"); MODULE_AUTHOR("Lars-Peter Clausen "); MODULE_LICENSE("GPL"); 67fc6ee7c05a88e4996e8177f91b'>diff
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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2017-02-03 17:10:28 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2017-02-08 23:36:29 +1100
commitd7df2443cd5f67fc6ee7c05a88e4996e8177f91b (patch)
tree098a7c0ca4fceb8a65cb1f693c9d71990388933d /include/net/netevent.h
parenta0615a16f7d0ceb5804d295203c302d496d8ee91 (diff)
powerpc/mm: Fix spurrious segfaults on radix with autonuma
When autonuma (Automatic NUMA balancing) marks a PTE inaccessible it clears all the protection bits but leave the PTE valid. With the Radix MMU, an attempt at executing from such a PTE will take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G". It is thus incorrect to treat all such faults as errors. We should pass them to handle_mm_fault() for autonuma to deal with. The case of pages that are really not executable is handled by the existing test for VM_EXEC further down. That leaves us with catching the kernel attempts at executing user pages. We can catch that earlier, even before we do find_vma. It is never valid on powerpc for the kernel to take an exec fault to begin with. So fold that test with the existing test for the kernel faulting on kernel addresses to bail out early. Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report") Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'include/net/netevent.h')