V4L/DVB (4632): Zoran: Implement pcipci failure check

We should be doing this on all devices doing PCI<->PCI DMA. We only set
the _FAIL ones when the DMA will fail or may cause crashes. This relies
on the PCIAGP_FAIL patch I sent to Andrew already

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/video/zoran_card.c b/drivers/media/video/zoran_card.c
index f2249ed..aa80ddd 100644 (file)
--- a/drivers/media/video/zoran_card.c
+++ b/drivers/media/video/zoran_card.c
@@ -1621,10 +1621,10 @@ init_dc10_cards (void)
        dprintk(5, KERN_DEBUG "Jotti is een held!\n");
 
        /* some mainboards might not do PCI-PCI data transfer well */
-       if (pci_pci_problems & PCIPCI_FAIL) {
+       if (pci_pci_problems & (PCIPCI_FAIL|PCIAGP_FAIL|PCIPCI_ALIMAGIK)) {
                dprintk(1,
                        KERN_WARNING
-                       "%s: chipset may not support reliable PCI-PCI DMA\n",
+                       "%s: chipset does not support reliable PCI-PCI DMA\n",
                        ZORAN_NAME);
        }
 
@@ -1632,7 +1632,7 @@ init_dc10_cards (void)
        for (i = 0; i < zoran_num; i++) {
                struct zoran *zr = &zoran[i];
 
-               if (pci_pci_problems & PCIPCI_NATOMA && zr->revision <= 1) {
+               if ((pci_pci_problems & PCIPCI_NATOMA) && zr->revision <= 1) {
                        zr->jpg_buffers.need_contiguous = 1;
                        dprintk(1,
                                KERN_INFO

diff --git a/drivers/media/video/zoran_driver.c b/drivers/media/video/zoran_driver.c
index 5f90db2..862a984 100644 (file)
--- a/drivers/media/video/zoran_driver.c
+++ b/drivers/media/video/zoran_driver.c
@@ -1512,6 +1512,13 @@ setup_fbuffer (struct file               *file,
        if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
                return -EPERM;
 
+       /* Don't allow frame buffer overlay if PCI or AGP is buggy, or on
+          ALi Magik (that needs very low latency while the card needs a
+          higher value always) */
+
+       if (pci_pci_problems & (PCIPCI_FAIL | PCIAGP_FAIL | PCIPCI_ALIMAGIK))
+               return -ENXIO;
+
        /* we need a bytesperline value, even if not given */
        if (!bytesperline)
                bytesperline = width * ((fmt->depth + 7) & ~7) / 8;