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Re: [PATCH] misc/pca9552: Fix LED status register indexing in pca955x_ge
From: |
Cédric Le Goater |
Subject: |
Re: [PATCH] misc/pca9552: Fix LED status register indexing in pca955x_get_led() |
Date: |
Fri, 23 Jul 2021 09:53:04 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 |
On 7/23/21 6:36 AM, Andrew Jeffery wrote:
> There was a bit of a thinko in the state calculation where every odd pin
> in was reported in e.g. "pwm0" mode rather than "off". This was the
> result of an incorrect bit shift for the 2-bit field representing each
> LED state.
>
> Fixes: a90d8f84674d ("misc/pca9552: Add qom set and get")
> Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
I don't think we need this fix for 6.1 since it has been there since
January 2020. Tell me otherwise.
Thanks,
C.
> ---
> hw/misc/pca9552.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/hw/misc/pca9552.c b/hw/misc/pca9552.c
> index b7686e27d7fa..fff19e369a39 100644
> --- a/hw/misc/pca9552.c
> +++ b/hw/misc/pca9552.c
> @@ -272,7 +272,7 @@ static void pca955x_get_led(Object *obj, Visitor *v,
> const char *name,
> * reading the INPUTx reg
> */
> reg = PCA9552_LS0 + led / 4;
> - state = (pca955x_read(s, reg) >> (led % 8)) & 0x3;
> + state = (pca955x_read(s, reg) >> ((led % 4) * 2)) & 0x3;
> visit_type_str(v, name, (char **)&led_state[state], errp);
> }
>
>