diff mbox series

[v2,3/4] firmware: qcom: scm: Rework dload mode availability check

Message ID 1711034642-22860-3-git-send-email-quic_mojha@quicinc.com
State New
Headers show
Series [v2,1/4] firmware: qcom: scm: Remove log reporting memory allocation failure | expand

Commit Message

Mukesh Ojha March 21, 2024, 3:24 p.m. UTC 
QCOM_SCM_BOOT_SET_DLOAD_MODE scm command is applicable for very
older SoCs where this command is supported from firmware and
for newer SoCs, dload mode tcsr registers is used for setting
the download mode.

Currently, qcom_scm_set_download_mode() checks for availability
of QCOM_SCM_BOOT_SET_DLOAD_MODE command even for SoCs where this
is not used. Fix this by switching the condition to keep the
command availability check only if dload mode registers are not
available.

Signed-off-by: Mukesh Ojha <quic_mojha@quicinc.com>
Reviewed-by: Elliot Berman <quic_eberman@quicinc.com>
---
Changes in v2: https://lore.kernel.org/lkml/20240227155308.18395-5-quic_mojha@quicinc.com/
 - Reworded the commit text.

 drivers/firmware/qcom/qcom_scm.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

Comments

Konrad Dybcio March 22, 2024, 6:24 p.m. UTC | #1 
On 21.03.2024 16:24, Mukesh Ojha wrote:
> QCOM_SCM_BOOT_SET_DLOAD_MODE scm command is applicable for very
> older SoCs where this command is supported from firmware and
> for newer SoCs, dload mode tcsr registers is used for setting
> the download mode.

This is a bit of a spaghetti sentence, but I get what you're saying.

And the patch looks good!

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>

Konrad
diff mbox series

Patch

diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c
index d9153204cba3..e238ebe21099 100644
--- a/drivers/firmware/qcom/qcom_scm.c
+++ b/drivers/firmware/qcom/qcom_scm.c
@@ -495,17 +495,14 @@  static int __qcom_scm_set_dload_mode(struct device *dev, bool enable)
 
 static void qcom_scm_set_download_mode(bool enable)
 {
-	bool avail;
 	int ret = 0;
 
-	avail = __qcom_scm_is_call_available(__scm->dev,
-					     QCOM_SCM_SVC_BOOT,
-					     QCOM_SCM_BOOT_SET_DLOAD_MODE);
-	if (avail) {
-		ret = __qcom_scm_set_dload_mode(__scm->dev, enable);
-	} else if (__scm->dload_mode_addr) {
+	if (__scm->dload_mode_addr) {
 		ret = qcom_scm_io_writel(__scm->dload_mode_addr,
-				enable ? QCOM_SCM_BOOT_SET_DLOAD_MODE : 0);
+					 enable ? QCOM_SCM_BOOT_SET_DLOAD_MODE : 0);
+	} else if (__qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_BOOT,
+						QCOM_SCM_BOOT_SET_DLOAD_MODE)) {
+		ret = __qcom_scm_set_dload_mode(__scm->dev, enable);
 	} else {
 		dev_err(__scm->dev,
 			"No available mechanism for setting download mode\n");