ipq40xx: 5.15: add patch commenting unused sdhci function

Add patch commenting unused sdhci function, hopin this will be dropped
when the problem is actually found.
Fix compilation warning:
drivers/mmc/host/sdhci-msm.c:1781:13: error: 'sdhci_msm_set_clock' defined but not used [-Werror=unused-function]
 1781 | static void sdhci_msm_set_clock(struct sdhci_host *host, unsigned int clock)
      |             ^~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

diff --git a/target/linux/ipq40xx/patches-5.15/401-mmc-sdhci-msm-comment-unused-sdhci_msm_set_clock.patch b/target/linux/ipq40xx/patches-5.15/401-mmc-sdhci-msm-comment-unused-sdhci_msm_set_clock.patch
new file mode 100644 (file)
index 0000000..b297600
--- /dev/null
+++ b/target/linux/ipq40xx/patches-5.15/401-mmc-sdhci-msm-comment-unused-sdhci_msm_set_clock.patch
@@ -0,0 +1,108 @@
+From 28edd829133766eb3cefaf2e49d3ee701968061b Mon Sep 17 00:00:00 2001
+From: Christian Marangi <ansuelsmth@gmail.com>
+Date: Tue, 9 May 2023 01:57:17 +0200
+Subject: [PATCH] mmc: sdhci-msm: comment unused sdhci_msm_set_clock
+
+comment unused sdhci_msm_set_clock and __sdhci_msm_set_clock as due to some
+current problem, we are forced to use sdhci_set_clock.
+
+Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
+---
+ drivers/mmc/host/sdhci-msm.c | 86 ++++++++++++++++++------------------
+ 1 file changed, 43 insertions(+), 43 deletions(-)
+
+--- a/drivers/mmc/host/sdhci-msm.c
++++ b/drivers/mmc/host/sdhci-msm.c
+@@ -1751,49 +1751,49 @@ static unsigned int sdhci_msm_get_min_cl
+       return SDHCI_MSM_MIN_CLOCK;
+ }
+ 
+-/*
+- * __sdhci_msm_set_clock - sdhci_msm clock control.
+- *
+- * Description:
+- * MSM controller does not use internal divider and
+- * instead directly control the GCC clock as per
+- * HW recommendation.
+- **/
+-static void __sdhci_msm_set_clock(struct sdhci_host *host, unsigned int clock)
+-{
+-      u16 clk;
+-
+-      sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
+-
+-      if (clock == 0)
+-              return;
+-
+-      /*
+-       * MSM controller do not use clock divider.
+-       * Thus read SDHCI_CLOCK_CONTROL and only enable
+-       * clock with no divider value programmed.
+-       */
+-      clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+-      sdhci_enable_clk(host, clk);
+-}
+-
+-/* sdhci_msm_set_clock - Called with (host->lock) spinlock held. */
+-static void sdhci_msm_set_clock(struct sdhci_host *host, unsigned int clock)
+-{
+-      struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+-      struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
+-
+-      if (!clock) {
+-              host->mmc->actual_clock = msm_host->clk_rate = 0;
+-              goto out;
+-      }
+-
+-      sdhci_msm_hc_select_mode(host);
+-
+-      msm_set_clock_rate_for_bus_mode(host, clock);
+-out:
+-      __sdhci_msm_set_clock(host, clock);
+-}
++// /*
++//  * __sdhci_msm_set_clock - sdhci_msm clock control.
++//  *
++//  * Description:
++//  * MSM controller does not use internal divider and
++//  * instead directly control the GCC clock as per
++//  * HW recommendation.
++//  **/
++// static void __sdhci_msm_set_clock(struct sdhci_host *host, unsigned int clock)
++// {
++//    u16 clk;
++
++//    sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
++
++//    if (clock == 0)
++//            return;
++
++//    /*
++//     * MSM controller do not use clock divider.
++//     * Thus read SDHCI_CLOCK_CONTROL and only enable
++//     * clock with no divider value programmed.
++//     */
++//    clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
++//    sdhci_enable_clk(host, clk);
++// }
++
++// /* sdhci_msm_set_clock - Called with (host->lock) spinlock held. */
++// static void sdhci_msm_set_clock(struct sdhci_host *host, unsigned int clock)
++// {
++//    struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
++//    struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
++
++//    if (!clock) {
++//            host->mmc->actual_clock = msm_host->clk_rate = 0;
++//            goto out;
++//    }
++
++//    sdhci_msm_hc_select_mode(host);
++
++//    msm_set_clock_rate_for_bus_mode(host, clock);
++// out:
++//    __sdhci_msm_set_clock(host, clock);
++// }
+ 
+ /*****************************************************************************\
+  *                                                                           *