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[v4,06/15] hw/i2c/ppc4xx_i2c: Replace i2c_send_recv() by i2c_recv() & i2c_send()

Message ID 20210616214254.2647796-7-f4bug@amsat.org (mailing list archive)
State New, archived
Headers show
Series hw/i2c: Remove confusing i2c_send_recv() API | expand

Commit Message

Philippe Mathieu-Daudé June 16, 2021, 9:42 p.m. UTC
Instead of using the confuse i2c_send_recv(), rewrite to directly
call i2c_recv() & i2c_send(), resulting in code easier to review.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/i2c/ppc4xx_i2c.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)
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Patch

diff --git a/hw/i2c/ppc4xx_i2c.c b/hw/i2c/ppc4xx_i2c.c
index f4c5bc12d36..75d50f15158 100644
--- a/hw/i2c/ppc4xx_i2c.c
+++ b/hw/i2c/ppc4xx_i2c.c
@@ -240,11 +240,14 @@  static void ppc4xx_i2c_writeb(void *opaque, hwaddr addr, uint64_t value,
                         i2c->sts &= ~IIC_STS_ERR;
                     }
                 }
-                if (!(i2c->sts & IIC_STS_ERR) &&
-                    i2c_send_recv(i2c->bus, &i2c->mdata[i], !recv)) {
-                    i2c->sts |= IIC_STS_ERR;
-                    i2c->extsts |= IIC_EXTSTS_XFRA;
-                    break;
+                if (!(i2c->sts & IIC_STS_ERR)) {
+                    if (recv) {
+                        i2c->mdata[i] = i2c_recv(i2c->bus);
+                    } else if (i2c_send(i2c->bus, i2c->mdata[i]) < 0) {
+                        i2c->sts |= IIC_STS_ERR;
+                        i2c->extsts |= IIC_EXTSTS_XFRA;
+                        break;
+                    }
                 }
                 if (value & IIC_CNTL_RPST || !(value & IIC_CNTL_CHT)) {
                     i2c_end_transfer(i2c->bus);