From 996142e61d11fc1c1bea2834a36116c9a0fae029 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 5 Apr 2013 20:39:36 -0400 Subject: [PATCH] pxa3xx-gcu: quite playing silly buggers with ->f_op misc device gets ->private_data pointing to struct miscdevice on open(), so we can use that to get to per-device structure instead of relying on file_operations being copied into it. Signed-off-by: Al Viro --- drivers/video/pxa3xx-gcu.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/drivers/video/pxa3xx-gcu.c b/drivers/video/pxa3xx-gcu.c index 6c984eacc7e3..4c318a34dfeb 100644 --- a/drivers/video/pxa3xx-gcu.c +++ b/drivers/video/pxa3xx-gcu.c @@ -369,15 +369,20 @@ pxa3xx_gcu_wait_free(struct pxa3xx_gcu_priv *priv) /* Misc device layer */ +static inline struct pxa3xx_gcu_priv *file_dev(struct file *file) +{ + struct miscdevice *dev = file->private_data; + return container_of(dev, struct pxa3xx_gcu_priv, misc_dev); +} + static ssize_t -pxa3xx_gcu_misc_write(struct file *filp, const char *buff, +pxa3xx_gcu_misc_write(struct file *file, const char *buff, size_t count, loff_t *offp) { int ret; unsigned long flags; struct pxa3xx_gcu_batch *buffer; - struct pxa3xx_gcu_priv *priv = - container_of(filp->f_op, struct pxa3xx_gcu_priv, misc_fops); + struct pxa3xx_gcu_priv *priv = file_dev(file); int words = count / 4; @@ -450,11 +455,10 @@ pxa3xx_gcu_misc_write(struct file *filp, const char *buff, static long -pxa3xx_gcu_misc_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) +pxa3xx_gcu_misc_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { unsigned long flags; - struct pxa3xx_gcu_priv *priv = - container_of(filp->f_op, struct pxa3xx_gcu_priv, misc_fops); + struct pxa3xx_gcu_priv *priv = file_dev(file); switch (cmd) { case PXA3XX_GCU_IOCTL_RESET: @@ -471,11 +475,10 @@ pxa3xx_gcu_misc_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) } static int -pxa3xx_gcu_misc_mmap(struct file *filp, struct vm_area_struct *vma) +pxa3xx_gcu_misc_mmap(struct file *file, struct vm_area_struct *vma) { unsigned int size = vma->vm_end - vma->vm_start; - struct pxa3xx_gcu_priv *priv = - container_of(filp->f_op, struct pxa3xx_gcu_priv, misc_fops); + struct pxa3xx_gcu_priv *priv = file_dev(file); switch (vma->vm_pgoff) { case 0: -- 2.20.1