scsi: ch: Don't use GFP_DMA

The allocated buffers are used as a command payload, for which the block
layer and/or DMA API do the proper bounce buffering if needed.

Link: https://lore.kernel.org/r/20211222090311.916624-1-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c
index 2701290..a313949 100644 (file)
--- a/drivers/scsi/ch.c
+++ b/drivers/scsi/ch.c
@@ -239,7 +239,7 @@ ch_read_element_status(scsi_changer *ch, u_int elem, char *data)
        u_char  *buffer;
        int     result;
 
-       buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
+       buffer = kmalloc(512, GFP_KERNEL);
        if(!buffer)
                return -ENOMEM;
 
@@ -297,7 +297,7 @@ ch_readconfig(scsi_changer *ch)
        int     result,id,lun,i;
        u_int   elem;
 
-       buffer = kzalloc(512, GFP_KERNEL | GFP_DMA);
+       buffer = kzalloc(512, GFP_KERNEL);
        if (!buffer)
                return -ENOMEM;
 
@@ -783,7 +783,7 @@ static long ch_ioctl(struct file *file,
                        return -EINVAL;
                elem = ch->firsts[cge.cge_type] + cge.cge_unit;
 
-               buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
+               buffer = kmalloc(512, GFP_KERNEL);
                if (!buffer)
                        return -ENOMEM;
                mutex_lock(&ch->lock);