# git rev-parse -q --verify 70b20dd7f897c6c14ab9e0d8400aed520ab5f09b^{commit}
70b20dd7f897c6c14ab9e0d8400aed520ab5f09b
already have revision, skipping fetch
# git checkout -q -f -B kisskb 70b20dd7f897c6c14ab9e0d8400aed520ab5f09b
# git clean -qxdf
# < git log -1
# commit 70b20dd7f897c6c14ab9e0d8400aed520ab5f09b
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Wed Aug 15 19:08:10 2018 -0700
# 
#     ALSA: update dell-wmi mic-mute registration to new world order
#     
#     Commit c647f806b8c2 ("ALSA: hda - Allow multiple ADCs for mic mute LED
#     controls") changed the return value of the snd_hda_gen_add_micmute_led()
#     without actually updating the callers.
#     
#     Admittedly, almost no callers actually cared about the return value.
#     But one call site very much did: the Dell wmi code.  It would see the
#     registration return zero, which _used_ to mean "failed" but now means
#     "success", and clear the dell_micmute_led_set_func pointer.
#     
#     End result: the successful registration would end up calling the Dell
#     code that thought it had all failed, and call through a NULL pointer.
#     
#     To make matters worse, it ends up being a tail-call, and with the
#     retpoline sequence you don't even see the caller (dell_micmute_update())
#     in the stack trace, so the error ended up way less obvious than it
#     should have been.
#     
#     Fixes: c647f806b8c2 "ALSA: hda - Allow multiple ADCs for mic mute LED controls"
#     Cc: Takashi Iwai <tiwai@suse.de>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < git log --format=%s --max-count=1 70b20dd7f897c6c14ab9e0d8400aed520ab5f09b
# < make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_ppc40x_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  ppc40x_defconfig
# make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_ppc40x_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:339:21: note: 'pdeo' was declared here
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:231:19: note: 'i' was declared here
INFO: Uncompressed kernel (size 0x517930) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x517930) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x5072bc) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x517930) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x517930) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
Image Name:   Linux-4.18.0-g70b20dd
Created:      Thu Aug 16 16:52:57 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2545108 Bytes = 2485.46 kB = 2.43 MB
Load Address: 00000000
Entry Point:  00000000
Image Name:   Linux-4.18.0-g70b20dd
Created:      Thu Aug 16 16:52:57 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2572072 Bytes = 2511.79 kB = 2.45 MB
Load Address: 00600000
Entry Point:  00601534
Image Name:   Linux-4.18.0-g70b20dd
Created:      Thu Aug 16 16:52:57 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2570437 Bytes = 2510.19 kB = 2.45 MB
Load Address: 00600000
Entry Point:  00601350
Completed OK
# rm -rf /kisskb/build/linus_ppc40x_defconfig_powerpc
# Build took: 0:01:13.049505