mirror of https://gitee.com/openkylin/linux.git
drm/i915: move printing and load error inject to i915_utils.[ch]
Seems like a better fit. Reduce clutter in i915_drv.[ch]. Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/bc458fa5e62fc8dae46216666f64ed6976fafaee.1565271681.git.jani.nikula@intel.com
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@ -48,6 +48,7 @@ i915-y += i915_drv.o \
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i915_scatterlist.o \
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i915_suspend.o \
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i915_sysfs.o \
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i915_utils.o \
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intel_csr.o \
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intel_device_info.o \
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intel_pch.o \
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@ -76,75 +76,6 @@
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static struct drm_driver driver;
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#if IS_ENABLED(CONFIG_DRM_I915_DEBUG)
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static unsigned int i915_probe_fail_count;
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int __i915_inject_load_error(struct drm_i915_private *i915, int err,
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const char *func, int line)
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{
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if (i915_probe_fail_count >= i915_modparams.inject_load_failure)
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return 0;
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if (++i915_probe_fail_count < i915_modparams.inject_load_failure)
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return 0;
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__i915_printk(i915, KERN_INFO,
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"Injecting failure %d at checkpoint %u [%s:%d]\n",
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err, i915_modparams.inject_load_failure, func, line);
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i915_modparams.inject_load_failure = 0;
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return err;
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}
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bool i915_error_injected(void)
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{
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return i915_probe_fail_count && !i915_modparams.inject_load_failure;
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}
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#endif
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#define FDO_BUG_URL "https://bugs.freedesktop.org/enter_bug.cgi?product=DRI"
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#define FDO_BUG_MSG "Please file a bug at " FDO_BUG_URL " against DRM/Intel " \
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"providing the dmesg log by booting with drm.debug=0xf"
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void
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__i915_printk(struct drm_i915_private *dev_priv, const char *level,
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const char *fmt, ...)
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{
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static bool shown_bug_once;
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struct device *kdev = dev_priv->drm.dev;
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bool is_error = level[1] <= KERN_ERR[1];
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bool is_debug = level[1] == KERN_DEBUG[1];
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struct va_format vaf;
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va_list args;
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if (is_debug && !(drm_debug & DRM_UT_DRIVER))
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return;
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va_start(args, fmt);
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vaf.fmt = fmt;
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vaf.va = &args;
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if (is_error)
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dev_printk(level, kdev, "%pV", &vaf);
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else
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dev_printk(level, kdev, "[" DRM_NAME ":%ps] %pV",
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__builtin_return_address(0), &vaf);
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va_end(args);
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if (is_error && !shown_bug_once) {
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/*
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* Ask the user to file a bug report for the error, except
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* if they may have caused the bug by fiddling with unsafe
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* module parameters.
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*/
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if (!test_taint(TAINT_USER))
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dev_notice(kdev, "%s", FDO_BUG_MSG);
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shown_bug_once = true;
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}
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}
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static int i915_get_bridge_dev(struct drm_i915_private *dev_priv)
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{
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int domain = pci_domain_nr(dev_priv->drm.pdev->bus);
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@ -104,27 +104,6 @@
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#define DRIVER_DATE "20190730"
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#define DRIVER_TIMESTAMP 1564512624
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#if IS_ENABLED(CONFIG_DRM_I915_DEBUG)
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int __i915_inject_load_error(struct drm_i915_private *i915, int err,
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const char *func, int line);
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#define i915_inject_load_error(_i915, _err) \
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__i915_inject_load_error((_i915), (_err), __func__, __LINE__)
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bool i915_error_injected(void);
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#else
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#define i915_inject_load_error(_i915, _err) 0
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#define i915_error_injected() false
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#endif
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#define i915_inject_probe_failure(i915) i915_inject_load_error((i915), -ENODEV)
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#define i915_probe_error(i915, fmt, ...) \
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__i915_printk(i915, i915_error_injected() ? KERN_DEBUG : KERN_ERR, \
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fmt, ##__VA_ARGS__)
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struct drm_i915_gem_object;
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enum hpd_pin {
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@ -2278,13 +2257,6 @@ intel_ggtt_update_needs_vtd_wa(struct drm_i915_private *dev_priv)
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}
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/* i915_drv.c */
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void __printf(3, 4)
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__i915_printk(struct drm_i915_private *dev_priv, const char *level,
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const char *fmt, ...);
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#define i915_report_error(dev_priv, fmt, ...) \
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__i915_printk(dev_priv, KERN_ERR, fmt, ##__VA_ARGS__)
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#ifdef CONFIG_COMPAT
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long i915_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
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#else
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@ -0,0 +1,78 @@
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// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2019 Intel Corporation
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*/
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#include <drm/drm_drv.h>
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#include "i915_drv.h"
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#include "i915_utils.h"
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#define FDO_BUG_URL "https://bugs.freedesktop.org/enter_bug.cgi?product=DRI"
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#define FDO_BUG_MSG "Please file a bug at " FDO_BUG_URL " against DRM/Intel " \
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"providing the dmesg log by booting with drm.debug=0xf"
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void
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__i915_printk(struct drm_i915_private *dev_priv, const char *level,
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const char *fmt, ...)
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{
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static bool shown_bug_once;
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struct device *kdev = dev_priv->drm.dev;
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bool is_error = level[1] <= KERN_ERR[1];
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bool is_debug = level[1] == KERN_DEBUG[1];
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struct va_format vaf;
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va_list args;
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if (is_debug && !(drm_debug & DRM_UT_DRIVER))
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return;
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va_start(args, fmt);
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vaf.fmt = fmt;
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vaf.va = &args;
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if (is_error)
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dev_printk(level, kdev, "%pV", &vaf);
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else
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dev_printk(level, kdev, "[" DRM_NAME ":%ps] %pV",
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__builtin_return_address(0), &vaf);
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va_end(args);
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if (is_error && !shown_bug_once) {
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/*
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* Ask the user to file a bug report for the error, except
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* if they may have caused the bug by fiddling with unsafe
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* module parameters.
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*/
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if (!test_taint(TAINT_USER))
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dev_notice(kdev, "%s", FDO_BUG_MSG);
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shown_bug_once = true;
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}
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}
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#if IS_ENABLED(CONFIG_DRM_I915_DEBUG)
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static unsigned int i915_probe_fail_count;
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int __i915_inject_load_error(struct drm_i915_private *i915, int err,
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const char *func, int line)
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{
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if (i915_probe_fail_count >= i915_modparams.inject_load_failure)
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return 0;
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if (++i915_probe_fail_count < i915_modparams.inject_load_failure)
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return 0;
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__i915_printk(i915, KERN_INFO,
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"Injecting failure %d at checkpoint %u [%s:%d]\n",
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err, i915_modparams.inject_load_failure, func, line);
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i915_modparams.inject_load_failure = 0;
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return err;
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}
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bool i915_error_injected(void)
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{
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return i915_probe_fail_count && !i915_modparams.inject_load_failure;
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}
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#endif
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@ -31,6 +31,8 @@
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#include <linux/types.h>
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#include <linux/workqueue.h>
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struct drm_i915_private;
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#undef WARN_ON
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/* Many gcc seem to no see through this and fall over :( */
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#if 0
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@ -49,6 +51,34 @@
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#define MISSING_CASE(x) WARN(1, "Missing case (%s == %ld)\n", \
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__stringify(x), (long)(x))
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void __printf(3, 4)
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__i915_printk(struct drm_i915_private *dev_priv, const char *level,
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const char *fmt, ...);
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#define i915_report_error(dev_priv, fmt, ...) \
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__i915_printk(dev_priv, KERN_ERR, fmt, ##__VA_ARGS__)
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#if IS_ENABLED(CONFIG_DRM_I915_DEBUG)
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int __i915_inject_load_error(struct drm_i915_private *i915, int err,
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const char *func, int line);
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#define i915_inject_load_error(_i915, _err) \
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__i915_inject_load_error((_i915), (_err), __func__, __LINE__)
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bool i915_error_injected(void);
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#else
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#define i915_inject_load_error(_i915, _err) 0
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#define i915_error_injected() false
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#endif
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#define i915_inject_probe_failure(i915) i915_inject_load_error((i915), -ENODEV)
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#define i915_probe_error(i915, fmt, ...) \
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__i915_printk(i915, i915_error_injected() ? KERN_DEBUG : KERN_ERR, \
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fmt, ##__VA_ARGS__)
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#if defined(GCC_VERSION) && GCC_VERSION >= 70000
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#define add_overflows_t(T, A, B) \
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__builtin_add_overflow_p((A), (B), (T)0)
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