From 590ac2ffde325da25371e169fc71826f2d118b6b Mon Sep 17 00:00:00 2001 From: Yangbo Lu Date: Mon, 8 Oct 2018 15:44:30 +0800 Subject: net: dpaa2: fix and improve dpaa2-ptp driver This patch is to fix and improve dpaa2-ptp driver in some places. - Fixed the return for some functions. - Replaced kzalloc with devm_kzalloc. - Removed dev_set_drvdata(dev, NULL). - Made ptp_dpaa2_caps const. Signed-off-by: Yangbo Lu Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c | 25 +++++++++--------------- 1 file changed, 9 insertions(+), 16 deletions(-) (limited to 'drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c') diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c index c73eef275a99..84b942b1eccc 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c @@ -46,7 +46,7 @@ static int ptp_dpaa2_adjfreq(struct ptp_clock_info *ptp, s32 ppb) mc_dev->mc_handle, tmr_add); if (err) dev_err(dev, "dprtc_set_freq_compensation err %d\n", err); - return 0; + return err; } static int ptp_dpaa2_adjtime(struct ptp_clock_info *ptp, s64 delta) @@ -61,17 +61,15 @@ static int ptp_dpaa2_adjtime(struct ptp_clock_info *ptp, s64 delta) err = dprtc_get_time(mc_dev->mc_io, 0, mc_dev->mc_handle, &now); if (err) { dev_err(dev, "dprtc_get_time err %d\n", err); - return 0; + return err; } now += delta; err = dprtc_set_time(mc_dev->mc_io, 0, mc_dev->mc_handle, now); - if (err) { + if (err) dev_err(dev, "dprtc_set_time err %d\n", err); - return 0; - } - return 0; + return err; } static int ptp_dpaa2_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) @@ -87,12 +85,12 @@ static int ptp_dpaa2_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) err = dprtc_get_time(mc_dev->mc_io, 0, mc_dev->mc_handle, &ns); if (err) { dev_err(dev, "dprtc_get_time err %d\n", err); - return 0; + return err; } ts->tv_sec = div_u64_rem(ns, 1000000000, &remainder); ts->tv_nsec = remainder; - return 0; + return err; } static int ptp_dpaa2_settime(struct ptp_clock_info *ptp, @@ -111,10 +109,10 @@ static int ptp_dpaa2_settime(struct ptp_clock_info *ptp, err = dprtc_set_time(mc_dev->mc_io, 0, mc_dev->mc_handle, ns); if (err) dev_err(dev, "dprtc_set_time err %d\n", err); - return 0; + return err; } -static struct ptp_clock_info ptp_dpaa2_caps = { +static const struct ptp_clock_info ptp_dpaa2_caps = { .owner = THIS_MODULE, .name = "DPAA2 PTP Clock", .max_adj = 512000, @@ -136,7 +134,7 @@ static int dpaa2_ptp_probe(struct fsl_mc_device *mc_dev) u32 tmr_add = 0; int err; - ptp_dpaa2 = kzalloc(sizeof(*ptp_dpaa2), GFP_KERNEL); + ptp_dpaa2 = devm_kzalloc(dev, sizeof(*ptp_dpaa2), GFP_KERNEL); if (!ptp_dpaa2) return -ENOMEM; @@ -182,8 +180,6 @@ err_close: err_free_mcp: fsl_mc_portal_free(mc_dev->mc_io); err_exit: - kfree(ptp_dpaa2); - dev_set_drvdata(dev, NULL); return err; } @@ -198,9 +194,6 @@ static int dpaa2_ptp_remove(struct fsl_mc_device *mc_dev) dprtc_close(mc_dev->mc_io, 0, mc_dev->mc_handle); fsl_mc_portal_free(mc_dev->mc_io); - kfree(ptp_dpaa2); - dev_set_drvdata(dev, NULL); - return 0; } -- cgit