memory: Propagate Error* when possible

[PATCH-for-9.0 21/25] hw/arm: Simplify memory_region_init_rom() calls

Posted by Philippe Mathieu-Daudé 1 year ago

Mechanical change using the following coccinelle script:

@@
expression mr, owner, arg3, arg4, errp;
@@
-   memory_region_init_rom(mr, owner, arg3, arg4, &errp);
    if (
-       errp
+       !memory_region_init_rom(mr, owner, arg3, arg4, &errp)
    ) {
        ...
        return;
    }

and removing the local Error variable.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/arm/fsl-imx25.c | 13 ++++---------
 hw/arm/fsl-imx31.c | 13 ++++---------
 hw/arm/fsl-imx6.c  | 13 ++++---------
 3 files changed, 12 insertions(+), 27 deletions(-)

diff --git a/hw/arm/fsl-imx25.c b/hw/arm/fsl-imx25.c
index b15435ccaf..9d2fb75a68 100644
--- a/hw/arm/fsl-imx25.c
+++ b/hw/arm/fsl-imx25.c
@@ -81,7 +81,6 @@ static void fsl_imx25_realize(DeviceState *dev, Error **errp)
 {
     FslIMX25State *s = FSL_IMX25(dev);
     uint8_t i;
-    Error *err = NULL;
 
     if (!qdev_realize(DEVICE(&s->cpu), NULL, errp)) {
         return;
@@ -281,18 +280,14 @@ static void fsl_imx25_realize(DeviceState *dev, Error **errp)
                                                        FSL_IMX25_WDT_IRQ));
 
     /* initialize 2 x 16 KB ROM */
-    memory_region_init_rom(&s->rom[0], OBJECT(dev), "imx25.rom0",
-                           FSL_IMX25_ROM0_SIZE, &err);
-    if (err) {
-        error_propagate(errp, err);
+    if (!memory_region_init_rom(&s->rom[0], OBJECT(dev), "imx25.rom0",
+                                FSL_IMX25_ROM0_SIZE, errp)) {
         return;
     }
     memory_region_add_subregion(get_system_memory(), FSL_IMX25_ROM0_ADDR,
                                 &s->rom[0]);
-    memory_region_init_rom(&s->rom[1], OBJECT(dev), "imx25.rom1",
-                           FSL_IMX25_ROM1_SIZE, &err);
-    if (err) {
-        error_propagate(errp, err);
+    if (!memory_region_init_rom(&s->rom[1], OBJECT(dev), "imx25.rom1",
+                                FSL_IMX25_ROM1_SIZE, errp)) {
         return;
     }
     memory_region_add_subregion(get_system_memory(), FSL_IMX25_ROM1_ADDR,
diff --git a/hw/arm/fsl-imx31.c b/hw/arm/fsl-imx31.c
index 1d5dcd51e8..c0584e4dfc 100644
--- a/hw/arm/fsl-imx31.c
+++ b/hw/arm/fsl-imx31.c
@@ -63,7 +63,6 @@ static void fsl_imx31_realize(DeviceState *dev, Error **errp)
 {
     FslIMX31State *s = FSL_IMX31(dev);
     uint16_t i;
-    Error *err = NULL;
 
     if (!qdev_realize(DEVICE(&s->cpu), NULL, errp)) {
         return;
@@ -188,20 +187,16 @@ static void fsl_imx31_realize(DeviceState *dev, Error **errp)
     sysbus_mmio_map(SYS_BUS_DEVICE(&s->wdt), 0, FSL_IMX31_WDT_ADDR);
 
     /* On a real system, the first 16k is a `secure boot rom' */
-    memory_region_init_rom(&s->secure_rom, OBJECT(dev), "imx31.secure_rom",
-                           FSL_IMX31_SECURE_ROM_SIZE, &err);
-    if (err) {
-        error_propagate(errp, err);
+    if (!memory_region_init_rom(&s->secure_rom, OBJECT(dev), "imx31.secure_rom",
+                                FSL_IMX31_SECURE_ROM_SIZE, errp)) {
         return;
     }
     memory_region_add_subregion(get_system_memory(), FSL_IMX31_SECURE_ROM_ADDR,
                                 &s->secure_rom);
 
     /* There is also a 16k ROM */
-    memory_region_init_rom(&s->rom, OBJECT(dev), "imx31.rom",
-                           FSL_IMX31_ROM_SIZE, &err);
-    if (err) {
-        error_propagate(errp, err);
+    if (!memory_region_init_rom(&s->rom, OBJECT(dev), "imx31.rom",
+                                FSL_IMX31_ROM_SIZE, errp)) {
         return;
     }
     memory_region_add_subregion(get_system_memory(), FSL_IMX31_ROM_ADDR,
diff --git a/hw/arm/fsl-imx6.c b/hw/arm/fsl-imx6.c
index 58f37e7c11..b2153022c0 100644
--- a/hw/arm/fsl-imx6.c
+++ b/hw/arm/fsl-imx6.c
@@ -109,7 +109,6 @@ static void fsl_imx6_realize(DeviceState *dev, Error **errp)
     MachineState *ms = MACHINE(qdev_get_machine());
     FslIMX6State *s = FSL_IMX6(dev);
     uint16_t i;
-    Error *err = NULL;
     unsigned int smp_cpus = ms->smp.cpus;
 
     if (smp_cpus > FSL_IMX6_NUM_CPUS) {
@@ -423,20 +422,16 @@ static void fsl_imx6_realize(DeviceState *dev, Error **errp)
     }
 
     /* ROM memory */
-    memory_region_init_rom(&s->rom, OBJECT(dev), "imx6.rom",
-                           FSL_IMX6_ROM_SIZE, &err);
-    if (err) {
-        error_propagate(errp, err);
+    if (!memory_region_init_rom(&s->rom, OBJECT(dev), "imx6.rom",
+                                FSL_IMX6_ROM_SIZE, errp)) {
         return;
     }
     memory_region_add_subregion(get_system_memory(), FSL_IMX6_ROM_ADDR,
                                 &s->rom);
 
     /* CAAM memory */
-    memory_region_init_rom(&s->caam, OBJECT(dev), "imx6.caam",
-                           FSL_IMX6_CAAM_MEM_SIZE, &err);
-    if (err) {
-        error_propagate(errp, err);
+    if (!memory_region_init_rom(&s->caam, OBJECT(dev), "imx6.caam",
+                                FSL_IMX6_CAAM_MEM_SIZE, errp)) {
         return;
     }
     memory_region_add_subregion(get_system_memory(), FSL_IMX6_CAAM_MEM_ADDR,
-- 
2.41.0

Re: [PATCH-for-9.0 21/25] hw/arm: Simplify memory_region_init_rom() calls

Posted by Gavin Shan 11 months, 4 weeks ago

On 11/21/23 07:32, Philippe Mathieu-Daudé wrote:
> Mechanical change using the following coccinelle script:
> 
> @@
> expression mr, owner, arg3, arg4, errp;
> @@
> -   memory_region_init_rom(mr, owner, arg3, arg4, &errp);
>      if (
> -       errp
> +       !memory_region_init_rom(mr, owner, arg3, arg4, &errp)
>      ) {
>          ...
>          return;
>      }
> 
> and removing the local Error variable.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>   hw/arm/fsl-imx25.c | 13 ++++---------
>   hw/arm/fsl-imx31.c | 13 ++++---------
>   hw/arm/fsl-imx6.c  | 13 ++++---------
>   3 files changed, 12 insertions(+), 27 deletions(-)
> 

Reviewed-by: Gavin Shan <gshan@redhat.com>

Re: [PATCH-for-9.0 21/25] hw/arm: Simplify memory_region_init_rom() calls

Posted by Manos Pitsidianakis 1 year ago

On Mon, 20 Nov 2023 23:32, Philippe Mathieu-Daudé <philmd@linaro.org> wrote:
>Mechanical change using the following coccinelle script:
>
>@@
>expression mr, owner, arg3, arg4, errp;
>@@
>-   memory_region_init_rom(mr, owner, arg3, arg4, &errp);
>    if (
>-       errp
>+       !memory_region_init_rom(mr, owner, arg3, arg4, &errp)
>    ) {
>        ...
>        return;
>    }
>
>and removing the local Error variable.
>
>Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
>---


Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>