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The patch enables the driver to be used on platforms such as ARM where an
I/O address is a 32-bit memory address.
The patch avoids the following kernel oops:
debian:~# modprobe sisfb
[ 73.070000] sisfb: Video ROM found
[ 73.080000] sisfb: Video RAM at 0x80000000, mapped to 0xe0a00000, size 1024k
[ 73.090000] sisfb: MMIO at 0x84080000, mapped to 0xe0b80000, size 256k
[ 73.090000] sisfb: Memory heap starting at 800K, size 32K
[ 73.360000] Unable to handle kernel paging request at virtual address 6e000844
[ 73.380000] pgd = df230000
[ 73.380000] [6e000844] *pgd=00000000
[ 73.380000] Internal error: Oops: 8f5 [#1]
[ 73.380000] Modules linked in: sisfb(+) fb cfbcopyarea cfbimgblt cfbfillrect
[ 73.380000] CPU: 0 Not tainted (2.6.31-iop32x #1)
[ 73.380000] PC is at SiS_SetRegANDOR+0x10/0x38 [sisfb]
[ 73.380000] LR is at SiS_SetSCLKHigh+0x38/0x94 [sisfb]
[ 73.380000] pc : [<bf01dc00>] lr : [<bf0238f8>] psr: 60000013
[ 73.380000] sp : df38fd00 ip : 6e000000 fp : 00000002
[ 73.380000] r10: 00000108 r9 : 00000000 r8 : 00000108
[ 73.380000] r7 : df064258 r6 : 00000110 r5 : 6e000844 r4 : 0000010a
[ 73.380000] r3 : 00000001 r2 : 0000000e r1 : 00000011 r0 : 00000844
[ 73.380000] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
[ 73.380000] Control: 0000397f Table: bf230000 DAC: 00000015
[ 73.380000] Process modprobe (pid: 1849, stack limit = 0xdf38e270)
[ 73.380000] Stack: (0xdf38fd00 to 0xdf390000)
[ 73.380000] fd00: 0000010a 00000108 df064258 df064258 df064258 00000000 00000000 bf02c4e0
[ 73.380000] fd20: 00000114 bf02c50c 00000013 00000114 0000010a df064258 00000000 bf02c980
[ 73.380000] fd40: 00009c66 00000004 00000001 df064250 a0010000 a6a2a0a0 df064250 00000003
[ 73.380000] fd60: df064250 00000000 df064258 0000fffd 00000000 00000000 00000000 bf033948
[ 73.380000] fd80: 00000000 00000000 00000000 bf019e2c 00000000
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| .. | ||
| accessibility | ||
| acpi | ||
| amba | ||
| ata | ||
| atm | ||
| auxdisplay | ||
| base | ||
| block | ||
| bluetooth | ||
| cdrom | ||
| char | ||
| clocksource | ||
| connector | ||
| cpufreq | ||
| cpuidle | ||
| crypto | ||
| dca | ||
| dio | ||
| dma | ||
| edac | ||
| eisa | ||
| firewire | ||
| firmware | ||
| gpio | ||
| gpu | ||
| hid | ||
| hwmon | ||
| i2c | ||
| ide | ||
| idle | ||
| ieee1394 | ||
| ieee802154 | ||
| infiniband | ||
| input | ||
| isdn | ||
| leds | ||
| lguest | ||
| macintosh | ||
| mca | ||
| md | ||
| media | ||
| memstick | ||
| message | ||
| mfd | ||
| misc | ||
| mmc | ||
| mtd | ||
| net | ||
| nubus | ||
| of | ||
| oprofile | ||
| parisc | ||
| parport | ||
| pci | ||
| pcmcia | ||
| platform | ||
| pnp | ||
| power | ||
| pps | ||
| ps3 | ||
| rapidio | ||
| regulator | ||
| rtc | ||
| s390 | ||
| sbus | ||
| scsi | ||
| serial | ||
| sh | ||
| sn | ||
| spi | ||
| ssb | ||
| staging | ||
| tc | ||
| telephony | ||
| thermal | ||
| uio | ||
| usb | ||
| uwb | ||
| video | ||
| virtio | ||
| vlynq | ||
| w1 | ||
| watchdog | ||
| xen | ||
| zorro | ||
| Kconfig | ||
| Makefile | ||