From 52f993b8e89487ec9ee15a7fb4979e0f09a45b27 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Wed, 8 Mar 2017 23:13:28 -0800 Subject: Upgrade to 4.4.50-rt62 The current kernel is based on rt kernel v4.4.6-rt14. We will upgrade it to 4.4.50-rt62. The command to achieve it is: a) Clone a git repo from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git b) Get the diff between this two changesets: git diff 640eca2901f3435e616157b11379d3223a44b391 705619beeea1b0b48219a683fd1a901a86fdaf5e where the two commits are: [yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only 640eca2901f3435e616157b11379d3223a44b391 640eca2901f3 v4.4.6-rt14 localversion-rt [yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only 705619beeea1b0b48219a683fd1a901a86fdaf5e 705619beeea1 Linux 4.4.50-rt62 localversion-rt c) One patch has been backported thus revert the patch before applying. filterdiff -p1 -x scripts/package/Makefile ~/tmp/v4.4.6-rt14-4.4.50-rt62.diff |patch -p1 --dry-run Upstream status: backport Change-Id: I244d57a32f6066e5a5b9915f9fbf99e7bbca6e01 Signed-off-by: Yunhong Jiang --- kernel/drivers/mtd/spi-nor/spi-nor.c | 46 +----------------------------------- 1 file changed, 1 insertion(+), 45 deletions(-) (limited to 'kernel/drivers/mtd/spi-nor') diff --git a/kernel/drivers/mtd/spi-nor/spi-nor.c b/kernel/drivers/mtd/spi-nor/spi-nor.c index 32477c4eb..37e4135ab 100644 --- a/kernel/drivers/mtd/spi-nor/spi-nor.c +++ b/kernel/drivers/mtd/spi-nor/spi-nor.c @@ -1067,45 +1067,6 @@ static int spansion_quad_enable(struct spi_nor *nor) return 0; } -static int micron_quad_enable(struct spi_nor *nor) -{ - int ret; - u8 val; - - ret = nor->read_reg(nor, SPINOR_OP_RD_EVCR, &val, 1); - if (ret < 0) { - dev_err(nor->dev, "error %d reading EVCR\n", ret); - return ret; - } - - write_enable(nor); - - /* set EVCR, enable quad I/O */ - nor->cmd_buf[0] = val & ~EVCR_QUAD_EN_MICRON; - ret = nor->write_reg(nor, SPINOR_OP_WD_EVCR, nor->cmd_buf, 1); - if (ret < 0) { - dev_err(nor->dev, "error while writing EVCR register\n"); - return ret; - } - - ret = spi_nor_wait_till_ready(nor); - if (ret) - return ret; - - /* read EVCR and check it */ - ret = nor->read_reg(nor, SPINOR_OP_RD_EVCR, &val, 1); - if (ret < 0) { - dev_err(nor->dev, "error %d reading EVCR\n", ret); - return ret; - } - if (val & EVCR_QUAD_EN_MICRON) { - dev_err(nor->dev, "Micron EVCR Quad bit not clear\n"); - return -EINVAL; - } - - return 0; -} - static int set_quad_mode(struct spi_nor *nor, const struct flash_info *info) { int status; @@ -1119,12 +1080,7 @@ static int set_quad_mode(struct spi_nor *nor, const struct flash_info *info) } return status; case SNOR_MFR_MICRON: - status = micron_quad_enable(nor); - if (status) { - dev_err(nor->dev, "Micron quad-read not enabled\n"); - return -EINVAL; - } - return status; + return 0; default: status = spansion_quad_enable(nor); if (status) { -- cgit 1.2.3-korg