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mmc: Power quirk for ENE controllers

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Support for these devices was broken for 2.6.18-rc1 and later by commit
146ad66eac, which added voltage level support.

This restores the previous behaviour for these devices by ensuring that when
the voltage is changed, only one write to set the voltage is performed.

It may be that both writes are needed if the voltage is being changed between
two non-zero values or that it's safe to ensure that only one write is done
if the hardware only supports one voltage; I don't know whether either is the
case nor can I test since I have only the one SD reader (1524:0550), and it
supports just the one voltage.

Signed-off-by: Darren Salt <linux@youmustbejoking.demon.co.uk>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Darren Salt
2007-01-27 15:32:31 +01:00
committed by Pierre Ossman
parent 11354d03af
commit 9e9dc5f29f
2 changed files with 20 additions and 3 deletions
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1
include/linux/pci_ids.h
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@@ -1971,6 +1971,7 @@
#define PCI_DEVICE_ID_TOPIC_TP560 0x0000
#define PCI_VENDOR_ID_ENE 0x1524
#define PCI_DEVICE_ID_ENE_CB712_SD 0x0550
#define PCI_DEVICE_ID_ENE_1211 0x1211
#define PCI_DEVICE_ID_ENE_1225 0x1225
#define PCI_DEVICE_ID_ENE_1410 0x1410