• Arnd Bergmann's avatar
    sound: autoconvert trivial BKL users to private mutex · 645ef9ef
    Arnd Bergmann authored
    The usage of the BKL in the OSS sound drivers is
    trivial, and each of them only locks against itself,
    so it can be turned into per-driver mutexes.
    
    This is the script that was used for the conversion:
    
    file=$1
    name=$2
    if grep -q lock_kernel ${file} ; then
        if grep -q 'include.*linux.mutex.h' ${file} ; then
                sed -i '/include.*<linux\/smp_lock.h>/d' ${file}
        else
                sed -i 's/include.*<linux\/smp_lock.h>.*$/include <linux\/mutex.h>/g' ${file}
        fi
        sed -i ${file} \
            -e "/^#include.*linux.mutex.h/,$ {
                    1,/^\(static\|int\|long\)/ {
                         /^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex);
    
    } }"  \
        -e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \
        -e '/[      ]*cycle_kernel_lock();/d'
    else
        sed -i -e '/include.*\<smp_lock.h\>/d' ${file}  \
                    -e '/cycle_kernel_lock()/d'
    fi
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
    645ef9ef
swarm_cs4297a.c 87.6 KB