The subject line could be more descriptive. All patches modify something, so the only real information it contains is "rts522a" and "init". Maybe it could say something about powering off OCP (whatever that is) when no memory card is present. On Tue, Feb 02, 2021 at 06:56:41PM +0800, ricky_wu@xxxxxxxxxxx wrote: > From: Ricky Wu <ricky_wu@xxxxxxxxxxx> > > Power down OCP for power consumption > when card is not exist at init_hw() I assume "card is not exist" means "no SD/MMC card is present". Why do you only do this for 5227? "card_exist" seems to be a generic concept (it's in struct rtsx_pcr and set by the generic rtsx_pci_init_hw()). Could/should this be done for other card readers as well? > Cc: stable@xxxxxxxxxxxxxxx Per https://www.kernel.org/doc/html/v5.10/process/stable-kernel-rules.html (option 1) this is sufficient. You should not include stable@xxxxxxxxxx in the cc: list above. > Signed-off-by: Ricky Wu <ricky_wu@xxxxxxxxxxx> > --- > drivers/misc/cardreader/rts5227.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/misc/cardreader/rts5227.c b/drivers/misc/cardreader/rts5227.c > index 8859011672cb..8200af22b529 100644 > --- a/drivers/misc/cardreader/rts5227.c > +++ b/drivers/misc/cardreader/rts5227.c > @@ -398,6 +398,11 @@ static int rts522a_extra_init_hw(struct rtsx_pcr *pcr) > { > rts5227_extra_init_hw(pcr); > > + /* Power down OCP for power consumption */ > + if (!pcr->card_exist) > + rtsx_pci_write_register(pcr, FPDCTL, OC_POWER_DOWN, > + OC_POWER_DOWN); > + > rtsx_pci_write_register(pcr, FUNC_FORCE_CTL, FUNC_FORCE_UPME_XMT_DBG, > FUNC_FORCE_UPME_XMT_DBG); > rtsx_pci_write_register(pcr, PCLK_CTL, 0x04, 0x04); > -- > 2.17.1 >
