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Revert "media: dvb: Add check on sp8870_readreg"

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[ Upstream commit 47e4ff06fa ]

This reverts commit 467a37fba9.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It will be fixed up "correctly" in a
later kernel change.

This commit is not properly checking for an error at all, so if a
read succeeds from this device, it will error out.

Cc: Aditya Pakki <pakki001@umn.edu>
Cc: Sean Young <sean@mess.org>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-59-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Greg Kroah-Hartman 2021-05-03 13:57:25 +02:00
commit 7dae0ca98a
1 changed files with 1 additions and 3 deletions
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4
drivers/media/dvb-frontends/sp8870.c
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@ -280,9 +280,7 @@ static int sp8870_set_frontend_parameters(struct dvb_frontend *fe)
sp8870_writereg(state, 0xc05, reg0xc05);
// read status reg in order to clear pending irqs
err = sp8870_readreg(state, 0x200);
if (err)
return err;
sp8870_readreg(state, 0x200);
// system controller start
sp8870_microcontroller_start(state);