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From: Richard Henderson <richard.henderson@linaro.org>
To: "Philippe Mathieu-Daudé" <f4bug@amsat.org>, qemu-devel@nongnu.org
Cc: Corey Minyard <cminyard@mvista.com>,
	"Signed-off-by : Frederic Konrad" <frederic.konrad@adacore.com>,
	qemu-arm@nongnu.org, qemu-ppc@nongnu.org
Subject: Re: [PATCH v3 10/13] hw/misc/auxbus: Replace i2c_send_recv() by i2c_recv() & i2c_send()
Date: Wed, 16 Jun 2021 11:46:43 -0700	[thread overview]
Message-ID: <0a45d89a-b710-12f7-6f82-75fdc6f0384d@linaro.org> (raw)
In-Reply-To: <20210616161418.2514095-11-f4bug@amsat.org>

On 6/16/21 9:14 AM, Philippe Mathieu-Daudé wrote:
> @@ -161,12 +157,11 @@ AUXReply aux_request(AUXBus *bus, AUXCommand cmd, uint32_t address,
>           }
>   
>           ret = AUX_I2C_ACK;
> -        while (len > 0) {
> -            if (i2c_send_recv(i2c_bus, data++, true) < 0) {
> +        for (i = 0; i < len; i++) {
> +            if (i2c_send(i2c_bus, data[i]) < 0) {
>                   ret = AUX_I2C_NACK;
>                   break;
>               }
> -            len--;
>           }

This form of updating ret is better than...

> @@ -200,14 +195,13 @@ AUXReply aux_request(AUXBus *bus, AUXCommand cmd, uint32_t address,
>   
>           bus->last_transaction = cmd;
>           bus->last_i2c_address = address;
> -        while (len > 0) {
> -            if (i2c_send_recv(i2c_bus, data++, true) < 0) {
> +        for (i = 0; i < len; i++) {
> +            if (i2c_send(i2c_bus, data[i]) < 0) {
>                   i2c_end_transfer(i2c_bus);
>                   break;
>               }
> -            len--;
>           }
> -        if (len == 0) {
> +        if (i == len) {
>               ret = AUX_I2C_ACK;
>           }

... this one.

Otherwise,
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~


  reply	other threads:[~2021-06-16 18:53 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-16 16:14 [PATCH v3 00/13] hw/i2c: Remove confusing i2c_send_recv() API Philippe Mathieu-Daudé
2021-06-16 16:14 ` [PATCH v3 01/13] hw/input/lm832x: Move lm832x_key_event() declaration to "lm832x.h" Philippe Mathieu-Daudé
2021-06-16 18:38   ` Richard Henderson
2021-06-16 19:23     ` Philippe Mathieu-Daudé
2021-06-16 16:14 ` [PATCH v3 02/13] hw/input/lm832x: Define TYPE_LM8323 in public header Philippe Mathieu-Daudé
2021-06-16 18:39   ` Richard Henderson
2021-06-16 16:14 ` [PATCH v3 03/13] hw/display/sm501: Simplify sm501_i2c_write() logic Philippe Mathieu-Daudé
2021-06-16 18:39   ` Richard Henderson
2021-06-16 16:14 ` [PATCH v3 04/13] hw/display/sm501: Replace i2c_send_recv() by i2c_recv() & i2c_send() Philippe Mathieu-Daudé
2021-06-16 18:40   ` Richard Henderson
2021-06-16 19:14   ` Corey Minyard
2021-06-16 16:14 ` [PATCH v3 05/13] hw/i2c/ppc4xx_i2c: Add reference to datasheet Philippe Mathieu-Daudé
2021-06-16 18:40   ` Richard Henderson
2021-06-16 16:14 ` [PATCH v3 06/13] hw/i2c/ppc4xx_i2c: Replace i2c_send_recv() by i2c_recv() & i2c_send() Philippe Mathieu-Daudé
2021-06-16 18:41   ` Richard Henderson
2021-06-16 19:16   ` Corey Minyard
2021-06-16 19:25     ` Philippe Mathieu-Daudé
2021-06-16 20:01       ` BALATON Zoltan
2021-06-16 20:28         ` Philippe Mathieu-Daudé
2021-06-16 23:09           ` BALATON Zoltan
2021-06-16 23:42             ` Corey Minyard
2021-06-17 23:49           ` BALATON Zoltan
2021-06-18  8:54             ` Philippe Mathieu-Daudé
2021-06-16 16:14 ` [PATCH v3 07/13] hw/misc/auxbus: Fix MOT/classic I2C mode Philippe Mathieu-Daudé
2021-06-16 18:41   ` Richard Henderson
2021-06-16 16:14 ` [PATCH v3 08/13] hw/misc/auxbus: Explode READ_I2C / WRITE_I2C_MOT cases Philippe Mathieu-Daudé
2021-06-16 18:41   ` Richard Henderson
2021-06-16 16:14 ` [PATCH v3 09/13] hw/misc/auxbus: Replace 'is_write' boolean by its value Philippe Mathieu-Daudé
2021-06-16 18:43   ` Richard Henderson
2021-06-16 16:14 ` [PATCH v3 10/13] hw/misc/auxbus: Replace i2c_send_recv() by i2c_recv() & i2c_send() Philippe Mathieu-Daudé
2021-06-16 18:46   ` Richard Henderson [this message]
2021-06-16 19:28     ` Philippe Mathieu-Daudé
2021-06-16 20:06       ` BALATON Zoltan
2021-06-16 16:14 ` [PATCH v3 11/13] hw/i2c: Remove confusing i2c_send_recv() Philippe Mathieu-Daudé
2021-06-16 18:47   ` Richard Henderson
2021-06-16 16:14 ` [PATCH v3 12/13] hw/i2c: Rename i2c_set_slave_address() -> i2c_slave_set_address() Philippe Mathieu-Daudé
2021-06-16 18:50   ` Richard Henderson
2021-06-16 16:14 ` [PATCH v3 13/13] hw/i2c: Make i2c_start_transfer() direction argument a boolean Philippe Mathieu-Daudé
2021-06-16 19:02   ` Richard Henderson
2021-06-16 19:28 ` [PATCH v3 00/13] hw/i2c: Remove confusing i2c_send_recv() API Corey Minyard

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