Re: [PATCH 1/2] i2c: slave-eeprom: initialize empty eeprom properly

From: Wolfram Sang
Date: Mon Apr 20 2020 - 12:43:53 EST


On Wed, Oct 02, 2019 at 08:20:53AM +0200, Bjorn Ardo wrote:
> Hi,
>
>
> I sent in another patch earlier that added support for specifying a file in
> devicetree to initilize the eeprom from, corresponding to the case of
> pre-flashed eeprom. Maybe these two patches should be merged so this
> initialization is only done if no file is specified?

Yes, I agree.

> /BA
>
> On 10/1/19 6:40 PM, Patrick Williams wrote:
> > The i2c-slave-eeprom driver emulates at24 class eeprom devices,
> > which come initialized with all 1s. Do the same in the software
> > emulation.
> >
> > Signed-off-by: Patrick Williams <alpawi@xxxxxxxxxx>
> > ---
> > drivers/i2c/i2c-slave-eeprom.c | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/drivers/i2c/i2c-slave-eeprom.c b/drivers/i2c/i2c-slave-eeprom.c
> > index db9763cb4dae..efee56106251 100644
> > --- a/drivers/i2c/i2c-slave-eeprom.c
> > +++ b/drivers/i2c/i2c-slave-eeprom.c
> > @@ -131,6 +131,8 @@ static int i2c_slave_eeprom_probe(struct i2c_client *client, const struct i2c_de
> > if (!eeprom)
> > return -ENOMEM;
> > + memset(eeprom->buffer, 0xFF, size);
> > +
> > eeprom->idx_write_cnt = 0;
> > eeprom->num_address_bytes = flag_addr16 ? 2 : 1;
> > eeprom->address_mask = size - 1;

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