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drm: i810_dma.c: fix pointer arithmetic for 64-bit target

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First warning result from open-coded PTR_ERR,
the rest is caused by code like this:

*(u32 *) ((u32) buf_priv->kernel_virtual + used)

I've also fixed a missing PTR_ERR in i830_dma.c

Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Denis Vlasenko 2006-08-16 11:54:07 +10:00 committed by Dave Airlie
parent 0a0c721dc5
commit c7aed17902
2 changed files with 5 additions and 5 deletions
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8
drivers/char/drm/i810_dma.c
View File

@ -141,10 +141,10 @@ static int i810_map_buffer(drm_buf_t * buf, struct file *filp)
MAP_SHARED, buf->bus_address);
dev_priv->mmap_buffer = NULL;
filp->f_op = old_fops;
if ((unsigned long)buf_priv->virtual > -1024UL) {
if (IS_ERR(buf_priv->virtual)) {
/* Real error */
DRM_ERROR("mmap error\n");
retcode = (signed int)buf_priv->virtual;
retcode = PTR_ERR(buf_priv->virtual);
buf_priv->virtual = NULL;
}
up_write(&current->mm->mmap_sem);
@ -808,7 +808,7 @@ static void i810_dma_dispatch_vertex(drm_device_t * dev,
((GFX_OP_PRIMITIVE | prim | ((used / 4) - 2)));
if (used & 4) {
*(u32 *) ((u32) buf_priv->kernel_virtual + used) = 0;
*(u32 *) ((char *) buf_priv->kernel_virtual + used) = 0;
used += 4;
}
@ -1166,7 +1166,7 @@ static void i810_dma_dispatch_mc(drm_device_t * dev, drm_buf_t * buf, int used,
if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
if (used & 4) {
*(u32 *) ((u32) buf_priv->virtual + used) = 0;
*(u32 *) ((char *) buf_priv->virtual + used) = 0;
used += 4;
}

2
drivers/char/drm/i830_dma.c
View File

@ -146,7 +146,7 @@ static int i830_map_buffer(drm_buf_t * buf, struct file *filp)
if (IS_ERR((void *)virtual)) { /* ugh */
/* Real error */
DRM_ERROR("mmap error\n");
retcode = virtual;
retcode = PTR_ERR((void *)virtual);
buf_priv->virtual = NULL;
} else {
buf_priv->virtual = (void __user *)virtual;