diff options
Diffstat (limited to 'target/linux/layerscape/patches-4.4/1113-mtd-spi-nor-fsl-quad-move-mtd_device_register-to-the.patch')
| -rw-r--r-- | target/linux/layerscape/patches-4.4/1113-mtd-spi-nor-fsl-quad-move-mtd_device_register-to-the.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-4.4/1113-mtd-spi-nor-fsl-quad-move-mtd_device_register-to-the.patch b/target/linux/layerscape/patches-4.4/1113-mtd-spi-nor-fsl-quad-move-mtd_device_register-to-the.patch new file mode 100644 index 0000000000..f54f9854e3 --- /dev/null +++ b/target/linux/layerscape/patches-4.4/1113-mtd-spi-nor-fsl-quad-move-mtd_device_register-to-the.patch @@ -0,0 +1,49 @@ +From 6f1195d231ab576809fe2f4cff44a6e48cff2457 Mon Sep 17 00:00:00 2001 +From: Yutang Jiang <yutang.jiang@nxp.com> +Date: Fri, 2 Sep 2016 22:00:16 +0800 +Subject: [PATCH 113/113] mtd: spi-nor: fsl-quad: move mtd_device_register to + the last of probe + +After call mtd_device_register, the mtd devices should be workable immediately. +If before finish all of init work call the mtd_device_register, it will not +respond work request timely. + +For example, openwrt/lede have a AUTO split special flash partitions mechanism +while mtd driver register. So, before call mtd_device_register, must let all of +init work ready. + +Signed-off-by: Yutang Jiang <yutang.jiang@nxp.com> +--- + drivers/mtd/spi-nor/fsl-quadspi.c | 14 ++++++++++---- + 1 file changed, 10 insertions(+), 4 deletions(-) + +--- a/drivers/mtd/spi-nor/fsl-quadspi.c ++++ b/drivers/mtd/spi-nor/fsl-quadspi.c +@@ -1280,10 +1280,6 @@ static int fsl_qspi_probe(struct platfor + if (ret) + goto mutex_failed; + +- ret = mtd_device_register(mtd, NULL, 0); +- if (ret) +- goto mutex_failed; +- + /* Set the correct NOR size now. */ + if (q->nor_size == 0) { + q->nor_size = mtd->size; +@@ -1313,6 +1309,16 @@ static int fsl_qspi_probe(struct platfor + goto last_init_failed; + + fsl_qspi_clk_disable_unprep(q); ++ ++ for (i = 0; i < q->nor_num; i++) { ++ /* skip the holes */ ++ if (!q->has_second_chip) ++ i *= 2; ++ ++ ret = mtd_device_register(&q->nor[i].mtd, NULL, 0); ++ if (ret) ++ goto last_init_failed; ++ } + return 0; + + last_init_failed: |