mtd: nand: omap: Do not use global variables

Since the commit 97a288ba2cfa ("ARM: omap2+: gpmc-nand: Use
dynamic platform_device_alloc()") gpmc-nand driver supports
multiple NAND flash devices connected to the single controller.
Remove global variable to make the code thread-safe.

Signed-off-by: Rostislav Lisovy <lisovy@merica.cz>
Acked-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index 3b357e920a0c03e187a71f7cab67cb66b373122e..b0f89d87de89594777121fbc81fc545e361c3a48 100644 (file)
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -144,9 +144,6 @@ static u_char bch8_vector[] = {0xf3, 0xdb, 0x14, 0x16, 0x8b, 0xd2, 0xbe, 0xcc,
        0xac, 0x6b, 0xff, 0x99, 0x7b};
 static u_char bch4_vector[] = {0x00, 0x6b, 0x31, 0xdd, 0x41, 0xbc, 0x10};
 
-/* oob info generated runtime depending on ecc algorithm and layout selected */
-static struct nand_ecclayout omap_oobinfo;
-
 struct omap_nand_info {
        struct nand_hw_control          controller;
        struct omap_nand_platform_data  *pdata;
@@ -168,6 +165,8 @@ struct omap_nand_info {
        u_char                          *buf;
        int                                     buf_len;
        struct gpmc_nand_regs           reg;
+       /* generated at runtime depending on ECC algorithm and layout selected */
+       struct nand_ecclayout           oobinfo;
        /* fields specific for BCHx_HW ECC scheme */
        struct device                   *elm_dev;
        struct device_node              *of_node;
@@ -1840,7 +1839,7 @@ static int omap_nand_probe(struct platform_device *pdev)
        }
 
        /* populate MTD interface based on ECC scheme */
-       ecclayout               = &omap_oobinfo;
+       ecclayout               = &info->oobinfo;
        switch (info->ecc_opt) {
        case OMAP_ECC_HAM1_CODE_SW:
                nand_chip->ecc.mode = NAND_ECC_SOFT;